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The following error message appears for each user, upon logging out of GP 2016 R2:
Unhandled object exception: The parameter is incorrect.
The discussion from the following URL indicates that this issue is resolved with a Mekorma hotfix:
Is this, indeed, the fix for this "nuisance"?
Yes, if the client computer is running Windows 10 and was recently patched with the Windows Creator Update. Mekorma has a mention of this on their web site. In addition to the error message, we could not print checks correctly. It worked at our company. We ran the Mekorma patch last week. We are running GP2015 R2.