I've never had this happen before in any software! I have an empty bounding box on my screen that attaches itself to any object/layer I choose. It won't delete and it doesn't show up on the layers panel. It's just there and it's stuck. I can't go any further because it groups itself to any layer I want to work with. Strangest thing I've even seen. Like a ghost! 
BTW It doesn't show up on a screen shot so I can't show you.
Can you help?
I and others have had phantom bounding box issues like that which you describe for years, through many versions of Illustrator. While it won't hurt to post your answers to Monika's questions, I'm doubtful as to whether they will lead to a permanent solution. You say you "can't go any further," but in my experience, the ghost bounding box has no actual effect on anything other than your perception of what's happening on your screen. If you can ignore it, it might eventually cease. Or alternatively, save your file, close Illustrator, re-launch, and re-open. That usually makes it go away for a while, at least.
There have been several threads on the forum about it, in which people offer their experiences with various permutations of the problem, and steps that seem to clear it up. This is one of the longer ones. Of course it's good that someone brings it back up from time to time in case a true solution has materialized, or at least to bring it back to the attention of Adobe.
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