content center more 2016

[PaoloR1]

Hey, guys.
I started using inventor 2016 today. all quite well, except when I opened the contained center to insert a screw, the contained center is completely empty. Has it happened to you?
advice?

Thank you and hello.
Palo

 

[PaoloR1]

reinstalled bookcases via key, everything ok.

Excuse me.