Map terrian trouble

[kimlou]

Okay I am making my first map.I did the mask and terrain and everything went fine.Then I was adding the 1st terrain to one of the grass files and I went to change the 2nd terrain and changed it but it was in the first terrain.I have the black spaces on the map to show that I do have more than one terrain.I'm not sure how to fix this.I would really like it if you helped me out. 

[BlackRidgeWolf]

Are you sure you typed the mask file name correct?

[Zaroque]

For the mask, did you make three terrains, or two? If you let blank spaces out in the mask (showing the original terrain map), then it'll be black.
Can we look at your mask map that you used?

[kimlou]

Oops I did type it wrong I saved it with the wrong name I'm sorry to bother you guys. I feel kind of stuid not checking the names XD.But Thanks for your help anyways!