map wont load

I’ve had this problem for 3 days now. It doesn’t matter what map I compile then load, tf2 always crashes before the menu screen loads.

I'm new to map making and I've just created my first one but I've run into a wall. Any time I decide to run my map it brings up the grey background screen of TF2 and closes out without going further. Ive checked for leaks which there are none and have been around several threads but I can't...