Wont compile!

[Athlete{UK}]

I have been using the new hammer for about 2 days now without any problem but all of a sudden my maps wont compile. I don't remember changing any setting they just don't work. They seem to compile and everything but when i run the mup in CS:S i get an older version of the map. this is most detressing please help.

[Cr4ig]

make sure to get the map from the output folder, copy it and paste it into the maps folder.