Error message

In the last two days I have had this error message pop upwhile applying mates in assemblies. After I select "OK" two orthree times the box will clear and the mate works fine. It willhappen for every mate I select once the error appears for the firsttime but the error message does not always appear (making it a painto capture for Rx!). These are basic mates like coincident orconcentric.

No crashes associated with this but it makes me paranoid. Anythoughts?

SolidworksGeneral