The last version worked fine.
No hardware or OS updates since the last version.
The update utility works, then nothing.

Here is the error.log
Setting up signal handlers...archive returned 0
Using 0 physics worker threads.
[Mon Sep 2 11:16:13 2013] Found driver: "ALSA driver". Type 1, Version 10.1. Load @0x09e55388
[Mon Sep 2 11:16:13 2013] Instantiate address: 0xb7788670
[Mon Sep 2 11:16:13 2013] Found driver: "Open Sound System driver". Type 1, Version 10.1. Load @0x09e568e0
[Mon Sep 2 11:16:13 2013] Instantiate address: 0xb7785210
[Mon Sep 2 11:16:13 2013] Found driver: "OpenGL Reference GKGL driver". Type 5, Version 104.0. Load @0x09e56c60
[Mon Sep 2 11:16:13 2013] Instantiate address: 0xb70a8830

Try running it from the terminal and see if you get more info.

When running vendetta in a terminal I get:
Fatal Error: Couldn't open window.

Found the issue. I had changed a few things that I'd forgotten about. Reloaded OS and all is golden.

Broke Xorg or something?
Have fun!