Draftsight V1.5 for Mac (Beta)

I was using what I thought was the current version for Mac in my iMac running Snow Leopard operating system.  I received the dreaded "License has expired" note and I was unable after several attempts to reactivate the software.  I removed all of it, including the .dmg file and downloaded a fresh copy from the 3ds website.  Now, when I attempt to run the program, I get a crash window with some note about a "file not found" error for some obscure file I've never seen.  I cannot get this software to run and I am afraid that the latest version is not compatible with OS X 10.6.8, despite what the the release notes say.

Anybody have any suggestions on how to fix this?