i know how to fix the ERRORS and black and pink checkerboard thing. just opt your game into steam pipe. to do so, right click the game, preferably Half-Life 2 ep2, click properties, then go to the "betas" tab. then click the little arrow to pull down a menu. then click on steampipe-beta. i would recommend doing it for all the games you have mounted on Garry's Mod. now another problem.
when i play this map, or the mountain defence, i get extreme lag. in another map i get lag too. but there is another map that is also somewhat like this and i get no lag at all.
so my question is how do i fix this? any help would be greatly appreciated, especially from the author.
sorry if i misspell anything.
thank you.