diff --git a/twidere/src/main/java/org/mariotaku/twidere/util/ErrorInfoStore.java b/twidere/src/main/java/org/mariotaku/twidere/util/ErrorInfoStore.java
index 1b1263210..63ab1ea47 100644
--- a/twidere/src/main/java/org/mariotaku/twidere/util/ErrorInfoStore.java
+++ b/twidere/src/main/java/org/mariotaku/twidere/util/ErrorInfoStore.java
@@ -23,6 +23,7 @@ public class ErrorInfoStore {
     public static final int CODE_NO_DM_PERMISSION = 1;
     public static final int CODE_NO_ACCESS_FOR_CREDENTIALS = 2;
     public static final int CODE_NETWORK_ERROR = 3;
+    public static final int CODE_TIMESTAMP_ERROR = 4;
 
     private final SharedPreferences mPreferences;
 
@@ -47,20 +48,20 @@ public class ErrorInfoStore {
         }
     }
 
-    public void put(String key, int code) {
+    public void set(String key, int code) {
         mPreferences.edit().putInt(key, code).apply();
     }
 
-    public void put(String key, String extraId, int code) {
-        put(key + "_" + extraId, code);
+    public void set(String key, String extraId, int code) {
+        set(key + "_" + extraId, code);
     }
 
-    public void put(String key, UserKey extraId, int code) {
+    public void set(String key, UserKey extraId, int code) {
         final String host = extraId.getHost();
         if (host == null) {
-            put(key, extraId.getId(), code);
+            set(key, extraId.getId(), code);
         } else {
-            put(key + "_" + extraId.getId() + "_" + host, code);
+            set(key + "_" + extraId.getId() + "_" + host, code);
         }
     }
 
@@ -79,6 +80,10 @@ public class ErrorInfoStore {
                 return new DisplayErrorInfo(code, R.drawable.ic_info_error_generic,
                         context.getString(R.string.network_error));
             }
+            case CODE_TIMESTAMP_ERROR: {
+                return new DisplayErrorInfo(code, R.drawable.ic_info_error_generic,
+                        context.getString(R.string.error_info_oauth_timestamp_error));
+            }
         }
         return null;
     }
diff --git a/twidere/src/main/kotlin/org/mariotaku/twidere/activity/ComposeActivity.kt b/twidere/src/main/kotlin/org/mariotaku/twidere/activity/ComposeActivity.kt
index 756936e64..63255947a 100644
--- a/twidere/src/main/kotlin/org/mariotaku/twidere/activity/ComposeActivity.kt
+++ b/twidere/src/main/kotlin/org/mariotaku/twidere/activity/ComposeActivity.kt
@@ -1027,8 +1027,10 @@ class ComposeActivity : BaseActivity(), OnMenuItemClickListener, OnClickListener
             }
         }
 
-        mentions.filterNot { it.equals(status.user_screen_name, ignoreCase = true)
-                || it.equals(accountUser.screen_name, ignoreCase = true) }
+        mentions.filterNot {
+            it.equals(status.user_screen_name, ignoreCase = true)
+                    || it.equals(accountUser.screen_name, ignoreCase = true)
+        }
                 .forEach { editText.append("@$it ") }
         val selectionEnd = editText.length()
         editText.setSelection(selectionStart, selectionEnd)
@@ -1776,7 +1778,10 @@ class ComposeActivity : BaseActivity(), OnMenuItemClickListener, OnClickListener
         override fun onClick(v: View) {
             when (v.id) {
                 R.id.remove -> {
-                    adapter?.remove(layoutPosition)
+                    val adapter = this.adapter ?: return
+                    if (layoutPosition >= 0 && layoutPosition < adapter.itemCount) {
+                        adapter.remove(layoutPosition)
+                    }
                 }
                 R.id.edit -> {
                     itemView.parent.showContextMenuForChild(itemView)
@@ -1796,7 +1801,9 @@ class ComposeActivity : BaseActivity(), OnMenuItemClickListener, OnClickListener
                 (activity as ComposeActivity).setMediaAltText(arguments.getInt(EXTRA_POSITION),
                         ParseUtils.parseString(editText.text))
             }
-            builder.setNeutralButton(R.string.clear) { dialogInterface, i -> (activity as ComposeActivity).setMediaAltText(arguments.getInt(EXTRA_POSITION), null) }
+            builder.setNeutralButton(R.string.clear) { dialogInterface, i ->
+                (activity as ComposeActivity).setMediaAltText(arguments.getInt(EXTRA_POSITION), null)
+            }
             val dialog = builder.create()
             dialog.setOnShowListener { dialog ->
                 val materialDialog = dialog as Dialog
diff --git a/twidere/src/main/kotlin/org/mariotaku/twidere/fragment/CursorActivitiesFragment.kt b/twidere/src/main/kotlin/org/mariotaku/twidere/fragment/CursorActivitiesFragment.kt
index ec0126a7c..fe63af5a1 100644
--- a/twidere/src/main/kotlin/org/mariotaku/twidere/fragment/CursorActivitiesFragment.kt
+++ b/twidere/src/main/kotlin/org/mariotaku/twidere/fragment/CursorActivitiesFragment.kt
@@ -61,7 +61,7 @@ abstract class CursorActivitiesFragment : AbsActivitiesFragment() {
             showContent()
         } else if (accountKeys.isNotEmpty()) {
             val errorInfo = ErrorInfoStore.getErrorInfo(context,
-                    errorInfoStore.get(errorInfoKey, accountKeys[0]))
+                    errorInfoStore[errorInfoKey, accountKeys[0]])
             if (errorInfo != null) {
                 showEmpty(errorInfo.icon, errorInfo.message)
             } else {
diff --git a/twidere/src/main/kotlin/org/mariotaku/twidere/fragment/CursorStatusesFragment.kt b/twidere/src/main/kotlin/org/mariotaku/twidere/fragment/CursorStatusesFragment.kt
index f5ca33f0e..a44fb731a 100644
--- a/twidere/src/main/kotlin/org/mariotaku/twidere/fragment/CursorStatusesFragment.kt
+++ b/twidere/src/main/kotlin/org/mariotaku/twidere/fragment/CursorStatusesFragment.kt
@@ -109,7 +109,7 @@ abstract class CursorStatusesFragment : AbsStatusesFragment() {
             showContent()
         } else if (accountKeys.isNotEmpty()) {
             val errorInfo = ErrorInfoStore.getErrorInfo(context,
-                    errorInfoStore.get(errorInfoKey, accountKeys[0]))
+                    errorInfoStore[errorInfoKey, accountKeys[0]])
             if (errorInfo != null) {
                 showEmpty(errorInfo.icon, errorInfo.message)
             } else {
diff --git a/twidere/src/main/kotlin/org/mariotaku/twidere/fragment/DirectMessagesFragment.kt b/twidere/src/main/kotlin/org/mariotaku/twidere/fragment/DirectMessagesFragment.kt
index 448da56e4..dd071944f 100644
--- a/twidere/src/main/kotlin/org/mariotaku/twidere/fragment/DirectMessagesFragment.kt
+++ b/twidere/src/main/kotlin/org/mariotaku/twidere/fragment/DirectMessagesFragment.kt
@@ -167,7 +167,7 @@ class DirectMessagesFragment : AbsContentListRecyclerViewFragment<MessageEntries
 
         if (accountIds.isNotEmpty()) {
             val errorInfo = ErrorInfoStore.getErrorInfo(context,
-                    errorInfoStore.get(ErrorInfoStore.KEY_DIRECT_MESSAGES, accountIds[0]))
+                    errorInfoStore[ErrorInfoStore.KEY_DIRECT_MESSAGES, accountIds.first()])
             if (isEmpty && errorInfo != null) {
                 showEmpty(errorInfo.icon, errorInfo.message)
             } else {
diff --git a/twidere/src/main/kotlin/org/mariotaku/twidere/fragment/StatusFragment.kt b/twidere/src/main/kotlin/org/mariotaku/twidere/fragment/StatusFragment.kt
index 9546efb67..b04d59331 100644
--- a/twidere/src/main/kotlin/org/mariotaku/twidere/fragment/StatusFragment.kt
+++ b/twidere/src/main/kotlin/org/mariotaku/twidere/fragment/StatusFragment.kt
@@ -411,7 +411,7 @@ class StatusFragment : BaseSupportFragment(), LoaderCallbacks<SingleResponse<Par
         if (status != null) {
             val readPosition = saveReadPosition()
             val dataExtra = data.extras
-            val details: AccountDetails = dataExtra.getParcelable(EXTRA_ACCOUNT)
+            val details: AccountDetails? = dataExtra.getParcelable(EXTRA_ACCOUNT)
             if (adapter.setStatus(status, details)) {
                 val args = arguments
                 if (args.containsKey(EXTRA_STATUS)) {
@@ -429,7 +429,11 @@ class StatusFragment : BaseSupportFragment(), LoaderCallbacks<SingleResponse<Par
 
                 val event = TweetEvent.create(activity, status, TimelineType.OTHER)
                 event.action = TweetEvent.Action.OPEN
-                event.isHasTranslateFeature = Utils.isOfficialCredentials(context, details)
+                if (details != null) {
+                    event.isHasTranslateFeature = Utils.isOfficialCredentials(context, details)
+                } else {
+                    event.isHasTranslateFeature = false
+                }
                 statusEvent = event
             } else if (readPosition != null) {
                 restoreReadPosition(readPosition)
@@ -1816,7 +1820,7 @@ class StatusFragment : BaseSupportFragment(), LoaderCallbacks<SingleResponse<Par
             updateItemDecoration()
         }
 
-        fun setStatus(status: ParcelableStatus, account: AccountDetails): Boolean {
+        fun setStatus(status: ParcelableStatus, account: AccountDetails?): Boolean {
             val old = this.status
             this.status = status
             statusAccount = account
diff --git a/twidere/src/main/kotlin/org/mariotaku/twidere/loader/ParcelableStatusLoader.kt b/twidere/src/main/kotlin/org/mariotaku/twidere/loader/ParcelableStatusLoader.kt
index 7d3d0721d..7faaa3c70 100644
--- a/twidere/src/main/kotlin/org/mariotaku/twidere/loader/ParcelableStatusLoader.kt
+++ b/twidere/src/main/kotlin/org/mariotaku/twidere/loader/ParcelableStatusLoader.kt
@@ -23,6 +23,7 @@ import android.accounts.AccountManager
 import android.content.Context
 import android.os.Bundle
 import android.support.v4.content.AsyncTaskLoader
+import org.mariotaku.ktextension.set
 import org.mariotaku.microblog.library.MicroBlogException
 import org.mariotaku.microblog.library.twitter.model.ErrorInfo
 import org.mariotaku.twidere.constant.IntentConstants
@@ -57,24 +58,24 @@ class ParcelableStatusLoader(
     }
 
     override fun loadInBackground(): SingleResponse<ParcelableStatus> {
-        if (accountKey == null || statusId == null) return SingleResponse.getInstance<ParcelableStatus>()
+        if (accountKey == null || statusId == null) {
+            return SingleResponse(exception = IllegalArgumentException())
+        }
         val details = AccountUtils.getAccountDetails(AccountManager.get(context), accountKey, true)
         if (!omitIntentExtra && extras != null) {
-            val cache = extras.getParcelable<ParcelableStatus>(IntentConstants.EXTRA_STATUS)
+            val cache: ParcelableStatus? = extras.getParcelable(IntentConstants.EXTRA_STATUS)
             if (cache != null) {
-                val response = SingleResponse.getInstance(cache)
-                val extras = response.extras
-                extras.putParcelable(EXTRA_ACCOUNT, details)
+                val response = SingleResponse(cache)
+                response.extras[EXTRA_ACCOUNT] = details
                 return response
             }
         }
+        if (details == null) return SingleResponse(exception = MicroBlogException("No account"))
         try {
-            if (details == null) return SingleResponse.getInstance<ParcelableStatus>()
             val status = findStatus(context, accountKey, statusId)
             ParcelableStatusUtils.updateExtraInformation(status, details, userColorNameManager)
-            val response = SingleResponse.getInstance(status)
-            val extras = response.extras
-            extras.putParcelable(EXTRA_ACCOUNT, details)
+            val response = SingleResponse(status)
+            response.extras[EXTRA_ACCOUNT] = details
             return response
         } catch (e: MicroBlogException) {
             if (e.errorCode == ErrorInfo.STATUS_NOT_FOUND) {
@@ -84,7 +85,7 @@ class ParcelableStatusLoader(
                         statusId, null)
                 DataStoreUtils.deleteActivityStatus(cr, accountKey, statusId, null)
             }
-            return SingleResponse.getInstance<ParcelableStatus>(e)
+            return SingleResponse(exception = e)
         }
 
     }
diff --git a/twidere/src/main/kotlin/org/mariotaku/twidere/service/RefreshService.kt b/twidere/src/main/kotlin/org/mariotaku/twidere/service/RefreshService.kt
index fe8265781..40e85e4cc 100644
--- a/twidere/src/main/kotlin/org/mariotaku/twidere/service/RefreshService.kt
+++ b/twidere/src/main/kotlin/org/mariotaku/twidere/service/RefreshService.kt
@@ -90,21 +90,21 @@ class RefreshService : Service() {
             when (refreshType) {
                 AutoRefreshType.HOME_TIMELINE -> {
                     val task = GetHomeTimelineTask(context)
-                    task.params = RefreshService.AutoRefreshTaskParam(context, AccountPreferences::isAutoRefreshHomeTimelineEnabled) { accountKeys ->
+                    task.params = AutoRefreshTaskParam(context, AccountPreferences::isAutoRefreshHomeTimelineEnabled) { accountKeys ->
                         DataStoreUtils.getNewestStatusIds(context, Statuses.CONTENT_URI, accountKeys)
                     }
                     return task
                 }
                 AutoRefreshType.INTERACTIONS_TIMELINE -> {
                     val task = GetActivitiesAboutMeTask(context)
-                    task.params = RefreshService.AutoRefreshTaskParam(context, AccountPreferences::isAutoRefreshMentionsEnabled) { accountKeys ->
+                    task.params = AutoRefreshTaskParam(context, AccountPreferences::isAutoRefreshMentionsEnabled) { accountKeys ->
                         DataStoreUtils.getNewestActivityMaxPositions(context, Activities.AboutMe.CONTENT_URI, accountKeys)
                     }
                     return task
                 }
                 AutoRefreshType.DIRECT_MESSAGES -> {
                     val task = GetReceivedDirectMessagesTask(context)
-                    task.params = RefreshService.AutoRefreshTaskParam(context, AccountPreferences::isAutoRefreshDirectMessagesEnabled) { accountKeys ->
+                    task.params = AutoRefreshTaskParam(context, AccountPreferences::isAutoRefreshDirectMessagesEnabled) { accountKeys ->
                         DataStoreUtils.getNewestMessageIds(context, DirectMessages.Inbox.CONTENT_URI, accountKeys)
                     }
                     return task
diff --git a/twidere/src/main/kotlin/org/mariotaku/twidere/task/GetDirectMessagesTask.kt b/twidere/src/main/kotlin/org/mariotaku/twidere/task/GetDirectMessagesTask.kt
index c72e46d78..d5e599777 100644
--- a/twidere/src/main/kotlin/org/mariotaku/twidere/task/GetDirectMessagesTask.kt
+++ b/twidere/src/main/kotlin/org/mariotaku/twidere/task/GetDirectMessagesTask.kt
@@ -86,11 +86,9 @@ abstract class GetDirectMessagesTask(
                 errorInfoStore.remove(ErrorInfoStore.KEY_DIRECT_MESSAGES, accountKey)
             } catch (e: MicroBlogException) {
                 if (e.errorCode == ErrorInfo.NO_DIRECT_MESSAGE_PERMISSION) {
-                    errorInfoStore.put(ErrorInfoStore.KEY_DIRECT_MESSAGES, accountKey,
-                            ErrorInfoStore.CODE_NO_DM_PERMISSION)
+                    errorInfoStore[ErrorInfoStore.KEY_DIRECT_MESSAGES, accountKey] = ErrorInfoStore.CODE_NO_DM_PERMISSION
                 } else if (e.isCausedByNetworkIssue) {
-                    errorInfoStore.put(ErrorInfoStore.KEY_DIRECT_MESSAGES, accountKey,
-                            ErrorInfoStore.CODE_NETWORK_ERROR)
+                    errorInfoStore[ErrorInfoStore.KEY_DIRECT_MESSAGES, accountKey] = ErrorInfoStore.CODE_NETWORK_ERROR
                 }
                 if (BuildConfig.DEBUG) {
                     Log.w(TwidereConstants.LOGTAG, e)
diff --git a/twidere/src/main/kotlin/org/mariotaku/twidere/task/twitter/GetActivitiesTask.kt b/twidere/src/main/kotlin/org/mariotaku/twidere/task/twitter/GetActivitiesTask.kt
index b19a91515..215a29306 100644
--- a/twidere/src/main/kotlin/org/mariotaku/twidere/task/twitter/GetActivitiesTask.kt
+++ b/twidere/src/main/kotlin/org/mariotaku/twidere/task/twitter/GetActivitiesTask.kt
@@ -107,11 +107,9 @@ abstract class GetActivitiesTask(
                     Log.w(LOGTAG, e)
                 }
                 if (e.errorCode == 220) {
-                    errorInfoStore.put(errorInfoKey, accountKey,
-                            ErrorInfoStore.CODE_NO_ACCESS_FOR_CREDENTIALS)
+                    errorInfoStore[errorInfoKey, accountKey] = ErrorInfoStore.CODE_NO_ACCESS_FOR_CREDENTIALS
                 } else if (e.isCausedByNetworkIssue) {
-                    errorInfoStore.put(errorInfoKey, accountKey,
-                            ErrorInfoStore.CODE_NETWORK_ERROR)
+                    errorInfoStore[errorInfoKey, accountKey] = ErrorInfoStore.CODE_NETWORK_ERROR
                 }
             }
 
diff --git a/twidere/src/main/kotlin/org/mariotaku/twidere/task/twitter/GetStatusesTask.kt b/twidere/src/main/kotlin/org/mariotaku/twidere/task/twitter/GetStatusesTask.kt
index 1c3a8f4e1..ec8948521 100644
--- a/twidere/src/main/kotlin/org/mariotaku/twidere/task/twitter/GetStatusesTask.kt
+++ b/twidere/src/main/kotlin/org/mariotaku/twidere/task/twitter/GetStatusesTask.kt
@@ -143,8 +143,9 @@ abstract class GetStatusesTask(
                     Log.w(LOGTAG, e)
                 }
                 if (e.isCausedByNetworkIssue) {
-                    errorInfoStore.put(errorInfoKey, accountKey.id,
-                            ErrorInfoStore.CODE_NETWORK_ERROR)
+                    errorInfoStore[errorInfoKey, accountKey.id] = ErrorInfoStore.CODE_NETWORK_ERROR
+                } else if (e.statusCode == 401) {
+                    // Unauthorized
                 }
                 result.add(TwitterWrapper.StatusListResponse(accountKey, e))
             }
diff --git a/twidere/src/main/kotlin/org/mariotaku/twidere/util/LegacyAutoRefreshController.kt b/twidere/src/main/kotlin/org/mariotaku/twidere/util/LegacyAutoRefreshController.kt
index 503041e7b..4077c88ac 100644
--- a/twidere/src/main/kotlin/org/mariotaku/twidere/util/LegacyAutoRefreshController.kt
+++ b/twidere/src/main/kotlin/org/mariotaku/twidere/util/LegacyAutoRefreshController.kt
@@ -4,6 +4,7 @@ import android.app.AlarmManager
 import android.app.PendingIntent
 import android.content.Context
 import android.content.Intent
+import android.os.SystemClock
 import android.support.v4.util.ArrayMap
 import org.mariotaku.kpreferences.KPreferences
 import org.mariotaku.twidere.annotation.AutoRefreshType
@@ -46,8 +47,8 @@ class LegacyAutoRefreshController(
         val pendingIntent = pendingIntents[type] ?: return
         val interval = TimeUnit.MINUTES.toMillis(kPreferences[refreshIntervalKey])
         if (interval > 0) {
-            val triggerAt = System.currentTimeMillis() + interval
-            alarmManager.setInexactRepeating(AlarmManager.RTC_WAKEUP, triggerAt, interval, pendingIntent)
+            val triggerAt = SystemClock.elapsedRealtime() + interval
+            alarmManager.setInexactRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP, triggerAt, interval, pendingIntent)
         }
     }
 
diff --git a/twidere/src/main/res/values/strings.xml b/twidere/src/main/res/values/strings.xml
index 1fe12b2a7..5fedb0101 100644
--- a/twidere/src/main/res/values/strings.xml
+++ b/twidere/src/main/res/values/strings.xml
@@ -818,4 +818,5 @@
     <string name="preference_randomize_account_name_summary">Disallow other apps to get your name by reading accounts, improves privacy.</string>
     <string name="preference_randomize_account_rename_accounts_confirm">Rename existing accounts?</string>
     <string name="message_auto_refresh_confirm">Enable auto refresh to get new tweets automatically?</string>
+    <string name="error_info_oauth_timestamp_error">Please check your system date &amp; time settings.</string>
 </resources>
\ No newline at end of file