I had a similar problem not to long ago and followed these steps, even though 10.2.0.3 is supposed to run on vista it did not seem to work until we changed the compatibillity mode, you probably already tried this, I think I found this after googleing the problem, but it worked for me.
Step 1: Disable DEP
Click Start
Click All Programs
Click Accessories
Right Click on Command Prompt
Left click on Run as Administrator
Click the Allow button if it asks you for permission
Type or past the following into the command prompt window:
bcdedit.exe /set {current} nx AlwaysOff
Hit enter and you should see the confirmation: Operation Completed Successfully
Reboot and DEP should be off.
Step 2: Set Windows XP Compatibility Mode
Right-click the setup executable setup.exe and choose Properties from the context menu that appears
Click on the Compatibility tab
Check the [ ] Run this program in compatibility mode for: box and select Windows XP (Service Pack 2)
Check Disable visual themes
Check Disable desktop composition
Check Disable display scaling on high DPI settings
Under privilege level check Run this program as an administrator
Click Apply
Click OK
Note: we had to uninstall and reinstall using these steps for it to work...
Edit -
http://www.psoug.org/reference/vista.html
I found the link I found this information at.