Mike, are you trying to edit your files on your desktop pc? You should be...
If you are, then move the files to a directory a little (lot) less lengthy... say C:forum
The path on your desktop pc is the one you set in multihack. And the whole path is only for the input box on the front options screen ( C:forum ). After that, all the other paths are just relative to the main one you've setup. Members would be something like ubbcgiMembers
If you just can't figure it out, there are developers available for modification work