Feedback loop detected

Hello everyone, this is my problem: When I try to bake textures in my blender, when it is about at 70% it says “Feedback loop detected”
I need to bake textures because I have a building, and I used AO textures with normal textures, and I need to texture them to export the model with textures to Unity 3d. Thanks

Maybe this http://community.secondlife.com/t5/Mesh/Feedback-loop-detected-Blender/td-p/1691515

I already deselected all textures and it isn’t working.