I've got some issue with paths needing to be full in some instances. E.g. I'm using the Signature Switch addon, but its settings use full paths.
The way I got round it previously was to set the external disc's drive letter to some specific one (e.g. J). Then all the full paths always point to the correct place. However, I don't always have the privileges to adjust such things on all PCs.
And trying to change that setting to some relative path doesn't work either. Is there perhaps some proggy which can load at PA's start which would search through some specified files and modify the drive letter found in these settings to the drive on which PA is installed?