That generic "MemoryError" with no further specifications make me suspect that either your RAM is not big enough or it has some faulty bit.
How much RAM do you have?
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Also for your previous post about the game exiting abruptly, something similar (no error window and no traceback.txt created) happened to me with another game (Bright Past v0.96.5) after a Windows update. It was working fine, then I made a Windows update and now it doesn't even start. When I double click on the .exe I can only see BrightPast.exe in the Task Manager detail list (but no window appears) and after something like 20 or 30 seconds the executable disappears even from task manager.
I tried the same files on the computer of a friend of mine, and it works fine... Must be some weird kind of conflict of that Windows update with my peculiar harware configuration. I asked on Bright Past thread, but I seem to be the only one experiencing this issue.
Also, booting my PC with Puppy Linux instead that with Windows, Bright Past works fine...