I send you a (big) crash log report. I will restore a backup, but may be it
will be useful for developpers.
Seems like RSSOwl didn't have permissions to delete the file C:\Documents and
Settings\.rssowl2.metadata.plugins\org.rssowl.core\tmp.bak (did you have
permissions on that file? is your filesystem inconsistent?)
thanks for providing this log report!
Backup failed, I have created a new profile and import my feeds. i can't try
now to see if i have permissions on file, because it is a new installation.