Gang:
Since 5.0 is no longer available, I've just been using 8.0 in XP. When the dust settled on CXO 5.0.0, I gave it a shot and couldn't get past the EULA screen. The EULA will not show, and the installer will not proceed until you acknowledge it.
This app may be a gonner in CXO. May have to go back to CXO v. 3 and try.
Brad