The opml parsing code handles cases where there are extra levels in the xml file
by copying the child to the main container. This corrupts the source instance
during the copy, which leads to corruption in the destination, and ultimately a
crash when it is later used.
To fix, do the copy in two steps, copying the child container to a temporary
location before copying to the destination.
Jim Broadus
John Maguire
Chocobozzz
Stephen Dawkins
Chocobozzz
Matt Scheirer
Krzysztof Sobiecki