Error when opening VectorWorks in Troubleshooting Posted March 14, 2007 my problem is related only in the most general way to this thread, but hoped someone might have the fix. I can't open a VW file on my Mac when I copy it directly from my PC; works in the other direction when I append .mcd suffix. even with that suffix in place on Mac it won't open. comes in as "Unix executable file". I understand and have used exporting in DWG and Vectorscript, but would prefer to open file directly. I'm sure I've succeeded in doing this in the past and suspect the fix is simple, but have not been able to find it.