Editing WADS with SLumpED

Whenever I edit ANYTHING in the wad, the section with the modified thing(s) will turn red and becomes a completely white Sonic. I read everything in the wiki but it didn't help


In this picture, I edit the acceleration from 44 to 43.

http://s1202.photobucket.com/albums/bb376/Mrman1223/?action=view&current=WAD_Help.png

Is there anything I did wrong?

Dunno, but SLumpED's development moved over to SLADE3 a while ago... You should be using that instead anyways. With luck, whatever issue you have here won't be present.