yes

routes.py

@@ -32,7 +32,7 @@ def touch_viewer(resp):
 def index():
     if g.viewer:
         return render_template('logged_in.html', scales=lib.interval_scales,
-                error=request.args.get('error', None))
+                tweet_archive_failed = 'tweet_archive_failed' in request.args)
     else:
         return render_template('index.html')
 
@@ -77,7 +77,7 @@ def upload_tweet_archive():
 
         return redirect(url_for('index', _anchor='recent_archives'))
     except (BadZipFile, AssertionError):
-        return redirect(url_for('index', error='The file you uploaded is not a valid tweet archive. No posts have been imported.'))
+        return redirect(url_for('index', tweet_archive_failed='', _anchor='tweet_archive_import'))
 
 @app.route('/settings', methods=('POST',))
 @require_auth

templates/logged_in.html

@@ -2,12 +2,6 @@
 {% extends 'lib/layout.html' %}
 {% block body -%}
 
-{% if error %}
-<section class=banners>
-    <div class="banner error">{{ error }}</div>
-</section>
-{% endif %}
-
 <section class=viewer>
 <p>Hello,
     <img class=avatar src="{{g.viewer.account.avatar_url}}"/>
@@ -68,15 +62,19 @@
 {% if g.viewer.account.service == 'twitter' %}
 <section>
 
-    <h2>Tweet archive import</h2>
+    <h2 id='tweet_archive_import'>Tweet archive import</h2>
     <p>
     Twitter's API only lets us access up to 3200 of your most recent tweets. If you have more tweets than that, you can request an archive of your tweets from
     <a href="https://twitter.com/settings/account">Twitter's settings page</a>,
     and upload it here.
     </p>
-<form action='{{url_for('upload_tweet_archive')}}' method='post' enctype='multipart/form-data'>
-    <input type="file" name='file'><input type="submit" value="Upload">
-</form>
+    <form action='{{url_for('upload_tweet_archive')}}' method='post' enctype='multipart/form-data'>
+        <input type="file" name='file'><input type="submit" value="Upload">
+    </form>
+
+    {% if tweet_archive_failed %}
+    <div class="banner error">The file you uploaded is not a valid tweet archive. No posts have been imported.</div>
+    {% endif %}
 
 {% if g.viewer.account.twitter_archives %}
     <h3 id="recent_archives">Recent archives</h3>