Message from UAD
I apologize for the inconvenience.  I've checked in with out QA department - they are currently testing the issue and will be in contact with Calkwalk to work on a resolution if there is a bug found. Unfortunately, I do not have a specific remedy at the moment except for back revving to version 6.3.0.  If there is a fix or workaround prior to that I will email you to let you know - I do apologize.