Setting up for the IARU and N1MM+ would fail to start with a message indicating it couldn't access some files.
I recalled AVG had updated yesterday. It was running in "Silent Mode" so no warning messages were displayed. Turned on normal mode and sure enough it was blocking access to the file(s). Allowed the access and all is well.
This is the first issue I have ever had with AVG in well over a decade of use.
