The only thing I can think of to fix this, is to reinstall the 777 using administrative rights (if you use Windows XP/Vista/7). Right click on the installer, csz772_1700.exe, select the Run as administrator option. It might be worth turning off your Anti-Virus, or AV shields, as well before reinstalling. Select the Repair option.

If you use Win 8/8.1/10, then it will ask you if your sure you want it to run the program, and if that's the case, then I don't know what to do to fix it. :(

I'm having problems with Win 10 (the free upgrade version) since I upgraded my computer a couple of months ago, and I can't activate it! :(