New in PayWindow 2017 Build 15.0.1:

There was a corruption in the W2 2-Up Forms in the initial 15.0.0 release and it is now fixed.

The Update Checker was also corrupted in 15.0.0.

Using the updater and when the bug report tool pops up simply click the "Continue Application" button and it will complete getting 15.0.1 installed.