As long as Poser returns to working I would not worry to much. I have seen the not responding for lots of programs and all that means is the program failed to respond with a system request for a time. This can happen when a program gets fixated on a portion of code it takes longer then normal.

Poser 5, 6, 7, 8, Poser Pro 9 (2012), 10 (2014), 11, 12, 13