[paddyrm]

Trying to run Portable Calibre from USB stick, get this error message:
calibre, version 7.7.0
ERROR: Could not create temporary folder: Could not create temporary folder, calibre cannot start. Click "Show details" for more information.

Traceback (most recent call last):
File "calibre\gui2\__init__.py", line 1177, in __init__
File "calibre\ptempfile.py", line 121, in base_dir
File "tempfile.py", line 368, in mkdtemp
FileNotFoundError: [WinError 3] The system cannot find the path specified: 'D:\\UserTmp\\calibre_5fa6_vid'

I don't have a drive D, my USB is F:

Any suggestions? A config file somewhere?

Cheers

Paddy