So, I was playing just fine last night. Shut off my computer, went to bed. Now I'm trying to play again and I can't get past the launcher screen; When I click Play, it begins to load, then gives me a Windows error message that D3 has stopped working.

This is running on Vista, 2 GB Ram, 2.2 GHz Phenom 9900 Quadcore CPU, Radeon HD 5570 (yes, drivers are current).

Here, have some error details. :3

Problem signature:
Problem Event Name: BEX
Application Name: Diablo III.exe
Application Version:
Application Timestamp: 4fa1ec3c
Fault Module Name: Diablo III.exe
Fault Module Version:
Fault Module Timestamp: 4fa1ec3c
Exception Offset: 00157273
Exception Code: c0000409
Exception Data: 00000000
OS Version: 6.0.6002.
Locale ID: 1033
Additional Information 1: 8a5f
Additional Information 2: 3eb1090793f7a0462a997fb204d5dfa6
Additional Information 3: fa5c
Additional Information 4: 7add5ee015398ebc51b86915bc3dc174