I tried with 32 and 64bit full versions and with the basic version and it always worked.
Have you tried to download your own file and build it? Maybe WM has made some subtle changes to some parameters when it saved the file? (You have one layout in that file with a falloff distance that is indeed very close to the dreaded 0.250 (0.250 WM-Units… see Project Settings > General Setup))
The error looked pretty reproducible so far. When I tested the file from smoth I got the exact same artifacts in the exact same places.
I don’t think ram is a factor here. WM says it needs about 18MB of ram which should not be problematic. Also, WM would print an error message if you ran out of memory.