Syncing a Windows VM with a Ubuntu 01.4beta host

error issue 502619001 Says " "18" is not a valid field for 13" This shows up when I hit the sync button in Firefox 3.6.3 on Ubuntu 10.4beta.
This makes no sense to me, but I am attempting to sync my virtualBox WinXP instance running firefox3.6 (currently downloading 3.6.3) and then sync zotero in an Ubuntu 10.4 beta host system running firefox 3.6.3.

I am doing it this way because firefox in Ubuntu keeps freezing up when I open a new window from the Capella U courseroom. Courseroom seems to be the problem, in this part of the issue, as it is optimized for Win or Mac and IE or Safari. I do not want to get a new Win7 machine to run as host but I may have to if I cannot resolve this in a very short time.

Yes, it is a beta OS and the issue arose only this week. It may automagically resolve itself next week, but I am wanting to have it working now.
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