I was working on a model, and I wanted to edit some texture nodes. So I went to the node editor and switched to the texture tab, but there was no way for me to select the the texture:
But when I switched to world texture, I was able to select a texture again.
The problem wasn't solved after restarting blender. So I wanted to see what would happen if I loaded another file or created a new one. After doing this, I was able to edit object texture nodes:
As you can see, only one blend file is being affected. Does anybody know what would be causing this or how it could be fixed?