Odd... can you create a new shortcut for it and run it with the " --debug" flag? That might reveal a little more information. Unfortunately, it sounds like a seg-fault...
I got nothing with --debug, either. Uninstalled, deleted all files in C:\Users\[uname]\AppData\Roaming\Armory\, reinstalled, and now everything works, including sending the transaction after signing it offline.
Thanks again!