Have you managed to get Aptana Studio debugging to work? I tried following this, but I don\'t see Windows -> Preferences -> Aptana -> Editors -> PHP -> PHP
I realize that this is a old thread but I was having the same problem with Aptana Studio 3 and FireFox. If anyone is having this problem make sure that FireFox has FireBug V1.8.X installed, any other version might give you the same problem...