I am using a PxPlus EFF database. It's also not he key itself, I have removed a couple of keys for testing
Because of the attachments restrictions on this forum I can't give you a screencapture of what happens.
The process just dies without any error message from windows or PxPlus 2018.
While using PxPlus 2017 the program performs fine and as intended.
I filed the ticket under #849795. I attached a screen capture of the behavior of the program and an image of the keydef.