Error processing uploaded data (Report ID: 8e411aa9)

I install zotero 2.0 today. I start first sync but not success. keep doing a few time and get:Error processing uploaded data (Report ID: 8e411aa9). I send the report thru the zetero error report window and get report number: 1474603988

I check Zetero serve, nothing get upload.
Is there a fix for this problem?

Thanks.

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