i've installed GIMP 2.4 or somthing its the unstable vesion and on the windows that say layer the new layer butten isent working ive tried everthing reinstall,createing stuff,etc
you installed Gimp-2.7.4?
What is your operating system?
Where did you download it from?
Can you create a new layer AFTER you create a File>New and selecting Layer>New Layer from the image window?
Did you select an existing layer BEFORE you clicked the New Layer button?