Yes, I've managed to reproduce the issue on Creators Update, and I have released a fixed version that has been tested successfully by a few members. In fact, the Original Poster of this thread is back in business. So I guess it could be published soon.
In terms of the root cause, I saw some strange new behaviors in Creators Update, around Windows messages in the Message Queue. Specifically, a message containing a handle to a Window that doesn't exist anywhere in the system (or at least not owned by Kixforms and doesn't show up in Windows Spy). This was the root cause of the issue. I can email you specific details if you're interested.
