citation formatting failed since update to mendeley 1.3.1

I was working with Mendeley version 1.0.1 and everything was fine, however since I updated to the 1.3.1 version I cannot use Mendeley anymore because anything I do is causing this error message:
Citation formatting failed.
Problem updating citation:
You can fix this citation by removing and re-inserting it.
If the problem persists, please get in touch with http://www.mendeley.com/contact-support.

I don't know which citation is causing the problem (there are more then 60 citations) and were not able to fix it yet. I "downgraded" to the old version 1.0.1 and with this version the error message doesn't occur. Is it a bug? Unfortunately with the 1.0.1 version I cannot use the internet functions anymore, so this isn't a long lasting solution... What can I do?
I already sent you the document but didn't got an answer yet...
thanx for your help!