Same OS, never had the problem. Since it's heavily based off Vista, could be DEP (Data Execution Prevention) acting up for some reason.
This should list all the nessesary steps:
http://www.itechtalk.com/thread3591.html
EDIT: If you're not tech savvy, here the gist of it: DEP is the program that prevents potentially malicious EXEs to be run on your system. However sometimes it will act up and block those you want to run. Just try to add the Launcher.exe and Fiesta.exe, and see how it goes from there.