Weird Problem = Cannot Duplicate actors, cannot drag them on screen ( solved)

famekrafts

I restarted my computer and suddenly I cannot work with GS.

My actors are not duplicating and I cannot drag them onto screen. Nothing happens when I drag them to screen?

Cannot even drag my behaviors from left to right.

What is wrong suddenly?

edit: ok I rebooted twice and now the problem is gone. Very weird but at least I can work now.

famekrafts

Ok I reproduced this problem, its happening again and again.

I tried to duplicate the image file by alt + dragging, that is when I cannot duplicate anymore or even drag any images onto actors or the behaviors to the right, till I reboot.