If after downloading and installing an update of ShedTech on Windows Vista, you encounter errors while starting the software, it is likely that you have the Vista UAC (User Account Control) turned on. The simplest solution is to this problem is to just turn the UAC off.
The Vista UAC is the main reason people have not embraced Vista. It is the reason for all the annoying pop-ups and continual confirmations
To turn off the Vista UAC, load the Windows Control Panel and type in "UAC" into the search box. You will then see the following screen:

Click on the link that appears and on the next screen uncheck the checkbox to turn off UAC. You will then need to reboot your computer.

After your computer has restarted, login into ShedTech straight away. After you have logged in, you can always turn the UAC back on without any further effect.