When i launch the game

We'll need more information than that if you expect help.

I think i have a theroy, if you have an engine error, it means you cant start the mod, right?
Or is there something else that happens?

Most common cause:
Your video card/computer isn't up to the task, or you modified an important value that you shouldn't have.

Menu backgrounds can also have issues with a widescreen resolution if they are not made correctly, a possibility with CD1.

Ok, because when i played insurgency, i had more than half those symptoms.

So, Strelok, can you tell me what version of windows you have or what type of Intel core, if your not sure, look on your computer or laptop, unless you've recently upgraded.