I may have found the culprit. Here's my story on a Vista 64 box, I just switched to a manually installed 1.2.0.7 to the msi for 1.2.0.8: After manually uninstalling 1.2.0.7, and making sure there were no traces left of DTB whatsoever, I got the 2869 error once I tried to install 1.2.0.8. I have UAC...