Try this.
1.Run the cleaner just once.
2.Remove the fenix mod.
3.Rename or replace the original fpsc.exe.
4.Build your game and do not try a test game, just build it.
5.After the build game, copy and past the fenix mod in the games folder and rename it accordingly "Alligator.exe"
If your game does not build and stops at the same place then it is all about what the runtime error is. Send that runtime error to hockeykid, ply or lee and they can tell you how to fix that error from showing again. Sometimes it is something simple, like it says it stopped at [280]: bulletholes. Did you change the bulletholes?
If nothing changes for you email me and and I will see what I can do to help.