Quote: "I think the function is sc_Start() or something very similar at the top of your code to initialise it. The demo files should have the initialisation command if it's not sc_Start()."
Yes, I have checked for the initialization using SC_Start(); and it is there. I even simply copy and pasted the code into a new solution thinking perhaps the properties of the original file were different but I got the same error.
I have also created and tested just a simple file (not the original Raycasting.exe) that just included SC_Collision.h and initialized it with SC_Start(); and this did not give me the error.
Any reason why I cannot compile the sample projects?