The below error may occur when installing Directory Troubleshooter:
"1158: Error populating strings. Verify that all strings in Setup.ini are valid."
1. Navigate to the "Quest Directory Troubleshooter Setup.exe" file (It is inside the Install folder)
2. Right click on the .exe file and go to properties
3. Click on the Compatibility tab and change the compatibility to run as "Windows XP (Service Pack 3)" and also change the privilege level to run as administrator (at the bottom of the tab). Click OK
4. Try to run the installation again
Run the setup manually as administrator by right clicking on the setup file and choosing "Run as Administrator". If this option does not show up, try holding down Shift and then right clicking on the setup file.
Disabled User Account Control, reboot the server and try the installation again.