I have used hammer before, I even almost finished a map, but it was so buggy that I stopped for a while. I think I messed with all the files of sdk and tf2, so much that lots of things are broken. - the hammer in tools sdk, can't load any maps. - the hammer in the tf2\bin doesn't have any entities - neither have a brush for landscape texturing (I saw a fix for this somewhere) - I think there is more, just can't think of them Should I just delete sdk and tf and reinstall them? or are these easy to fix?