How to Repair an NSIS Error

1. Go to "Start > Run." Type "cmd" into the search bar and hit "Enter." This will bring up a window with a black background.
2. Drag and drop the software setup .exe file that you want to install. For example, if you are trying to install Yahoo! Messenger, first download the Messenger program, then move the file (msgr10us.exe) into the black window.
3. Hit the spacebar on the keyboard. Type "/NCRC" after the setup file. For example, "msgr10us.exe /NCRC"." Hit "Enter" when you are done, and wait for the program to install.