I will try that and see what I get

I have tried complete uninstall and reinstall, still no luck. May try an alpha or beta build to see if that helps

@maker1 if you watch the video I linked, that's what I did.

@michael-petitclerc that's the version that I'm on. Windows 10 amd procs. 64bit. One is an HP laptop, other is home built quad core, 16GB DDR3

A Google drive video link is the best that I can do.
link text
It's 1:34 minutes long, and at the 1min mark you can see the dialogue box flash in the upper right corner

I'm on 2.19.2.10169, and subtract isn't work for me. On my designs, or imported designs. It's been probably 3 maybe 4 updates since it worked. It act like it's doing the subtract, ie. The pop-up window in the upper left shows it's modifying, but then nothing changes. If I slice it, both objects are where they were before the subtract. The other Boolean operations seem to work as they should. Any help would be appreciated.