I am suddenly getting this error when attempting to start Vegas Pro 11.

Honestly, everything was working fine yesterday. Application does not even start today.

Has anyone else seen this?

Problem Description
   Application Name:    Vegas Pro
   Application Version: Version 11.0 (Build 701) 64-bit
   Problem:             Unmanaged Exception (0xc0000005)
   Fault Module:        C:\Program Files\Sony\Vegas Pro 11.0\x86\FileIOSurrogate.exe
   Fault Address:       0x000000005446BE79
   Fault Offset:        0x000000005446BE79

Fault Process Details
   Process Path:        C:\Program Files\Sony\Vegas Pro 11.0\x86\FileIOSurrogate.exe
   Process Version:     Version 11.0 (Build 701)
   Process Description: File I/O surrogate (not visible)
   Process Image Date:  2012-09-24 (Mon Sep 24) 19:54:26