Hmmm...
I would ask to you run it on gdb or valgrind, but it seems to had been a random
error...

Yes, I'm also getting a lot of SIGSEGVs lately. I wonder why.

Now, about the non-fatal error:
It basicaly said that when you bashed the crate, it should had started a blast,
but it was't started correctly. In other words, for some reason it was animated
outside the map.
So, I would recommend you to stop bashing crates and barrels when this error
happens again.

I was not able to reproduce.