Message4965

I've seen that mysterious "The system cannot find the file <garbage>" on 
windows but I'm not sure it's related (though I've never tried Django on 
here)

I'm a bit suspicious of Windows line endings being the problem since 
you're seeing "invalid constant type: 13". (char)13 is carriage return. 
Is the 'type: 13' always reproducable?

It's a long shot, but you could test that theory by dos2unixing the 
.class file and then trying to import it

No idea what might be corrupting the bytecode. Doubtful it's our 
compiler but you never know