Re:2012 - Do you have Poser set-up for embedded or external library, try swapping to the other approach and see if that changes the behaviour. What OS are you using, if its Windows was the IE 11 update applied, is p2012 on its latest patch? Also if you're using Windows a problem that has very similar effects is a desktop heap issue where it runs out of memory but this tends to only happen if there are many windows open at the same time (graphic programs are particularly resource hungry).