Problems with jack hammer

So i started using jackhammer and now im a bit confused since I always get this error.




And just to let you know, this is my compile set up



Having issues Jacking your Hammer... that sucks yo....

Oh wait the mapping tools!

Bad surface extents can be caused by the following:

- illegal brush created with the vertex tool
- too big / or too small scaled textures
- brush rotated without texture lock

dr_mabuse wrote:
- too big / or too small scaled textures

Right there. Thats the problem