Crash on Exit

[Sudbina]

About 30 minutes ago, I was playing online for a few minutes and decided to exit from the game in order to log off of AIM and YIM. After I clicked on the exit button for the game, the game had a soft lock up and the only thing that I was able to do was to CTRL+ALT+DEL out of the game. At this point, a Windows Vista dialog box came up saying that there was an error with the program and it said it was looking for a possible solution. The Event Viewer log for this was:

Faulting application Altitude.exe, version 0.0.0.0, time stamp 0x4a095b72, faulting module unknown, version 0.0.0.0, time stamp 0x00000000, exception code 0xc0000005, fault offset 0x74a59bb4, process id 0x404, application start time 0x01ca778335499b32.

There was no Bug Report that became available when the crash occurred.

Also, after this occurred, the game didn't want to relaunch from Steam and it just stayed at the loading splash screen.

The system that I was using is:

Intel Core2Duo E8400 @ 3.0 GHz
XFX Radeon HD4850 1GB
Gigabyte GA-EP45-UD3L
8 GB G.Skill Ram
Microsoft Windows Vista Home Premium x64

Edit: I was looking through the Problems & Solutions for a more detailed version of the Event Viewer log and this is what I got:

Problem signature
Problem Event Name: APPCRASH
Application Name: Altitude.exe
Application Version: 0.0.0.0
Application Timestamp: 4a095b72
Fault Module Name: StackHash_c453
Fault Module Version: 0.0.0.0
Fault Module Timestamp: 00000000
Exception Code: c0000005
Exception Offset: 74a59bb4
OS Version: 6.0.6002.2.2.0.768.3
Locale ID: 1033
Additional Information 1: c453
Additional Information 2: abcc8f7853b48d9807d6d51eb1fa5df9
Additional Information 3: c453
Additional Information 4: abcc8f7853b48d9807d6d51eb1fa5df9

If I'm not mistaken then the StackHash has to deal with DEP. Has Altitude been known to cause DEP to trigger?