sync error - extra field too long (error report 916842283)

Attempt to sync produced the following error:

[JavaScript Error: "[Exception... "'Extra field 'Access: http://www.loc.gov/catdir/bios/ucal051/950...' too long' when calling method: [nsIDOMEventListener::handleEvent]" nsresult: "0x8057001e (NS_ERROR_XPC_JS_THREW_STRING)" location: "<unknown>" data: no]"]

Search for this phrase (Access: http...) in my library didn't produce any items with this phrase in the Extra field. I tried deleting everything in the "extra" field, but still can't sync.

Error report 916842283

This is an old discussion that has not been active in a long time. Instead of commenting here, you should start a new discussion. If you think the content of this discussion is still relevant, you can link to it from your new discussion.