Try restarting your computer and playing again. Don't forget all the good stuff - Disable or turn off anti-virus and firewall, right-click and run trainer and game As Admin.
Somebody was getting this error with another game and he had forgotten to turn off/disable all security, anti virus and firewall progs.
If that doesn't work, try a new copy of WinRAR or 7Zip or maybe even try this:
[Edited by element5, 7/2/2014 11:54:28 PM]