I've had EditPlus as my default program for .txt files for years. At some time recently the association has been lost and I have attempted to re-associate program and file type, but the association will not take. I go to folder options, file types tab, scroll down and select TXT. I select change and I get the pop-up listing suggestions; EditPlus is not on the list. So I choose browse and find the program, click open, and the program is still not on the list. I upgraded Editplus after first noting this issue and was able to make the association but it soon became lost again and nothing I've tried will re-establish it. I'm running XP SP3 with all security updates. I have Avast! for anti virus, Sygate for a firewall, and also run Spyware Doctor (free versions of all). I run the same thing on two other machines and the association is fine. I'd be grateful for any suggestions.