Search for more on this. I had this problem with the early Win 7 betas and found the solution. I think the issue was with the extension files themselves.
-- <http://forum.pspad.com/read.php?2,50715,50768> PSPad freeware editor http://www.pspad.com
- =?windows-1250?Q?PsPad_lacks_jScript_support_in_Windows_7... matematicomarpla
- =?windows-1250?Q?Re:_PsPad_lacks_jScript_support_in_... zef
- =?windows-1250?Q?Re:_PsPad_lacks_jScript_support_in_... matematicomarpla
- =?windows-1250?Q?Re:_PsPad_lacks_jScript_support_in_... inwedes
- =?windows-1250?Q?Re:_PsPad_lacks_jScript_support_in_... Stewart Souter
- =?windows-1250?Q?Re:_PsPad_lacks_jScript_support_in_... ayenonomous
