Line 82 of the file has:
($dsninfo['hostspec'] . ':/' . $dsninfo['database']) : This does not work in Windows/IIS. Changing that to ($dsninfo['hostspec'] . ':' . $dsninfo['database']) : works. I cannot verify that this will also work in Linux and such but I don't see why it wouldn't as long as you put a beginning / in all paths. Nelson