rarebluemonkey's dashboard

I was finally able to solve this!

My work computer has been fine, but my home computer kept popping up a message that said that a new sync file had been uploaded and asked me what I wanted to do (merge, cancel or download). Nothing that I would do could get xmarks to cooperate. When I opened the xmarks settings, I kept seeing that sync failed (error 3)

I tried:
- merge
-download
-force download from the app
-uninstall and reinstall xmarks
-uninstall xmarks, uninstall firefox and reinstall both
-backup bookmarks and restore in firefox
-looked for 'places' files but couldn't find them

Finally, I did this:

SOLUTION (for me)
1) made sure that my bookmarks were on the xmarks server by going to tools>xmarks>my xmarks in firefox
2) went to bookmarks>organize bookmarks and manually deleted all my bookmarks
3) went to tools>xmarks>xmarks settings and went to the advanced tab
4) selected the 'download' button next to 'force overwrite of local data'

Success!

I have the same issue. I have tried to uninstall and reinstall Xmarks, but it keeps happening. (only on this computer)

When I go to Xmarks settings > current status, I get problem syncing "unknown error occurred(3)"