Windows Vista and above prevents program to write into system folders like Windows, Root C:\, Program files, ... Even you are administrator, the system runs program with USER rights equivalent. You need to elevate rights (run as admin) if you need it or switch off UAC to disable this control to allow a program write into protected folders. I don't suggest to switch off UAC . It's a good prevention to keep your system folders at least little clean.
You can put your portable application to a separate folder - you use \Portable, I use \Programs... You can easily copy it when you reinstall your system. Or you can set PSPad to run in multiuser environment (Program settings / System). This option sets your user profile for PSPad config files where logged user has write rights. -- <http://forum.pspad.com/read.php?2,63456,63486> PSPad freeware editor http://www.pspad.com
