Hello Mike, thanks for answering. When the install stop, you can press the cancel button and the installation abort, so the install can process the events in the form. When abort, i can run regedit without problems, so i think that the problem is not regedit. Today probed with IE5 & IE5.5 and nothing, i can't install IE.
Any others ideas?
In that case I'm afraid no, I don't have any other ideas. You'll have to debug it to find out why it's stopping.