Strangely the error was caused from using the same version.
Last thing I really did was when I tried running it the game said that there was an error in a block and thus cancelled the compile.
I than carried on and built some extra pieces on my map as well as importing some map entities.
After saving I closed game-maker and than re-opened about 15 minutes later to receive the error, as well as the error on all of my other projects.
This was the uni's computer so I will try to open on another computer when I next goto uni.