Hello Everyone We wish to tell this story that happened today in this sequence: 1)Started PE (demo (v1.620?) downloaded 21MAY) and got popup window 'Demo used more than 30 days or 50 times - please uninstall' - everything OK so far 2)Uninstalled from Start>Control Panel>Add/Remove Programs 3)Rebooted to take effect 4)Upon reboot Explorer crashed and popup said 'Explorer caused fault in unknown.........and will shutdown' 5)Clicked OK and Explorer started up again 6)This was continuously happening until we closed an application running which is a Quick Launch Bar replacement. Why we thought of that we are not sure. 7)The Explorer crashes stopped. Finally got to try to go online with Internet Explorer and now IE was crashing 9)Got popup window similar to above for Explorer 10)Clicked OK and tried to restart IE but it kept on crashing continuously. 11)Shutdown and rebooted computer and had same scenario. 12)In BIOS changed startup to alternate HDD with another 98SE on it and restarted computer. 13)Of course everything on this alternate drive was OK and running well as we only have 98SE, NOD32 AV and Outpost FW on this HDD. 14)Using Explorer we verified there were no files left under Port Explorer folder in primary HDD. 15)We then downloaded new PE demo v1.680 into primary HDD. 16)Reset Bios to reboot to primary HDD. 17)Rebooted into primary HDD and kept the Quick Launch replacement off. 1Since Explorer worked when this QL replacement was off we were able use Explorer to go to the new PE demo and clicked to install it. 19)PE partially installed but popup window said 'Used over 30 days or 50 times.......' and v1.680 would not function (understandably). 20)Rebooted to have any changes take effect. 21)Upon reboot we restarted the QL replacement and got no Explorer crashes. 22)Tried IE and got no crashes. All appears fully functional and working fine now. It seems the unistall of older PE was very problematic. FYI Thank you (DCS) for great programs and (Forum Moderators) for great assistance.