Blank Window or MsgBox with 64-bit

I seem to remember asking this question but can’t find it.
If compile or debug my app as a 64-bit versus 32-bit, I have windows and/or msgboxes show up empty.
This is on High-Sierra.
Does anyone else have this problem?

I also cannot define this in that it Always happens.
The only thing I can be sure is my XOJO cache hasn’t been cleaned in a while, but that shouldn’t be just because I haven’t cleaned my cache.

Sometimes both windows are blank. Ideas.
Image 1
Image 2

Sorry. I deleted the above post when I couldn’t post the links.
Grumble. The links still don’t work. Dropbox.
Blank MainPage2.png
Blank MainPage1.png

Here you go