When I try to run slimserver up, I instantly get the following:

mkdir file:///P:/: Invalid argument at P:/Music/SlimServer/trunk/server/Slim/Utils/Prefs.pm line 447

I had a look at the code - seems to be looking for the cache dir and attempting to create it if it doesn't exist.

My slimserver.pref file contains:
cachedir: P:\Music\SlimServer\server\Cache

This Cache folder existed. I tried deleting it, but get the same error.

Phil