Director stores the absolute castlib location, but as a second choice
tries to find the cast file at the same relative locations as the
Develping it;s no big issue, just find it by hand when the 'where is..."
file open dialog comes up, resiving after locating the casts fixes
Creating CDs with linked files in other folder not a sub branch of the
..dir file location tends to confuse things when the CD drive letter
changes on different systems.