[MuQ]

Could this be caused by the length of the files name/path?

Pre win 10, the maximum file name length is 260 chars (note 260 includes the file path)
For win 10/11, the maximum length can be 32767 ish but you have to opt in to this increased length by changing the registry
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\FileSystem] "LongPathsEnabled"=dword:00000001
(see Maximum Path Length Limitation - Win32 apps | Microsoft Docs) for more details

I know in the past that I have had issues (not MSP related) with long names and have fixed it by removing a couple of directories from the path.

Geoff

Hey Geoff

My full file path was 74 characters, so under 260.

 Mike, if you need me to test anything I'd be happy to help.