If you assign Open TXT in PSPad in PSPad, not in installer, installer can't change it back, because it doesn't know it.
You can use simple way to correct association - use Right mouse over your .TXT in Windows Explorer, choose Open with..., choose in list Notepad and check checkbox to open always txt in Notepad. -- <http://forum.pspad.com/read.php?2,49559,49560> PSPad freeware editor http://www.pspad.com
