Segmentation fault (BGE linked object group)

I import an object group instance, then run the BGE and the whole thing crashes. This pops up in the terminal:

Writing: /tmp/filename.crash.txt
Segmentation fault

[Process completed]

I am using Blender 2.79. Whats so strange is that on many blend files it works just fine.

That means the C code attempted to reference a deallocated memory address. Nothing really you can do here. I suggest try to do the same thing with a different group instance to see if the problem is repeatable with other things.

If nothing works, create a new file and append everything from your blend into it. It can be that the blend got corrupted. (don’t use blend files in other (up)bge’s then the original bge where you created that blend)