Just a total shot in the dark here…
Look in these 2 files and make sure that all the listed hexagon-relevant directories are correct:
C:\Documents and Settings\<yourusername>\Application Data\DAZ 3D\dzInstall.ini
C:\Documents and Settings\All Users\Application Data\DAZ 3D\dzInstall.ini
Also, DAZ products create directory stubs for its products that hold rather innocuous looking data such as preferences and shortcuts and the like. I suspect it doesn’t harm anything to leave them there when you do a reinstall, but I’ve never trusted them - IOW, I delete them before doing a reinstall. The hexagon directory stub is here:
C:\Documents and Settings\<yourusername>\Application Data\DAZ 3D\Hexagon 2
BTW, deleting this directory AFTER installation effectively resets your hexagon to default, and hexagon will create a new one. Even that may be something you can try.
I’m admittedly grasping at straws here, but at this point even lame suggestions may yield a clue.
After rereading the thread and looking at your and Sal’s exchange, it looks like you’re running win7. My data is XP style, but the gist is the same.