After reading the messages here, I took all of the favorites out of the resources folder, restarted, added new favorites and the program suddenly starts much faster. If you go to "Show Package Contents", look for the Mac OS folder and click "Get Info" on Vectorworks, it shows a Unix Executable file at 74.4MB on disk. Even after dumping all of the favorites, it as still a large file.
Why dumping the favorites worked? We can't figure it out.