Windows XP Run As Note: In the Run As dialog that follows, please clear the box "Protect my computer and data from unauthorized program activity". This prevents TSU Loader error message #5.
This message refers to an option in the Windows XP Run As dialog box that follows this message. When it appears, you should clear the indicated option. If you don't clear the option, then InstallMate's TSU Loader program will be unable to access its installation database and will fail the installation.
The underlying reason for this problem is that Windows XP restricts access to the Temp folder if you leave the Protect my computer and data from unauthorized program activity option checked. TSU Loader needs to extract some files to that folder in order to run the installer and will fail with error code 5 (Access denied) if the protection is switched on.
Click OK to dismiss the message box, then clear the Protect my computer and data from unauthorized program activity option in the Run As dialog box that follows.