Unable to create process... error

Having been compiling successfully to MacOS running Catalina, (Delphi 10.3.2). I have today discovered that the compilation fails. If I run in debug, I get an error dialog, in the IDE  "Unable to Create Process: /Aplications/PAServer-20.00app/Contents/MacOS/db..." the dialog is too small for the complete text to be displayed and unfortunately cannot be resized to read the complete message. I cannot compile to 32 bit or 64 bit. If I run to an older Mac running High Sierra that still works. Does anyone have any knowledge of this or have an idea as to why this has suddenly started to happen? Any help greatly appreciated. 

BTW... Happens with a blank project.