Hmm no. No idea about that one. Sorry
However, this is only slightly related but I had this problem before:
Make sure to never leave an 'empty' object at creation. Let me explain: when you add a new primitive (cube, cylinder etc) you are put in 'edit mode' to change the object's size or rotation. Sometimes if I'm not happy about the object I'll just press 'del'. This is wrong because it's still in edit mode and it'll only remove vertexes/faces etc. And then if you exit edit mode you'll be left with a ghost object that you can't see or select..
Now I guess that kind of dumb issues only happen to me but you never know... <_<