reproduction steps:
1 view video in standalone viewer
2 enable loop playback
3 delete that video in file panel by pressing del key
if not enable loop playback , it will not crash
@leo cannot reproduce?
I could 
Dumps sent via email, file was too big for the internal crash reporter.
It is Sunday.
LOL
the min dumps is about 37MB, the bigger dumps has 86MB
They usually compress down a lot, but we've increased the maximum size the server will accept since Lxp's dump was more than the limit when compressed.
The bug has been fixed for the next update. Thanks for the report!