I just tried this on my computer for the first time and...got the same thing. I'm running linux.
Here is the error:
and the logs show *lots* of these errors when importing to the zd2 local folder:
2010-10-12 16:17:31,938 WARN [btpool0-7] [mid=1;] misc - system failure: invalid value for flags: 1207959552:
2010-10-12 16:17:31,939 WARN [btpool0-7] [mid=1;] misc - system failure: invalid value for flags: 1207959552:
2010-10-12 16:17:31,939 WARN [btpool0-7] [mid=1;] misc - system failure: invalid value for flags: 1207959552:
2010-10-12 16:17:31,939 WARN [btpool0-7] [mid=1;] misc - system failure: invalid value for flags: 1207959552:
The file I'm trying to import was an export of the local mail folder with the advanced settings set to only allow exporting of type "mail":
121M 2010-10-12 14:49 Local Folders-2010-10-12-144841.tgz