i have tried that, and also tried making a simple room with a light source and the explosion in the center, it is still not working. I then repeated this several time, creating a new map each time (i have the patience for the sort of thing surprisingly) and remaking everything. This env_explsion simply isnt even damaging things even if the magnitude is between one and one million. Shall i try rienstalling the fgd. files that it is found it?