Hi Ben, could you please let me know the following information about your windows 2003 machine:
1. Is it x64 or x32 bit OS?
2. Is it .net 2.0/3.5 or .net 4.0?
3. Is your app/sample x64 or x32?
4. There are logs file in your working folder, open the latest one and copy/paste here will help me to diagnose.