You should do a clean install.  With Poser closed rename the folder that the program is installed in and leave it in place for the moment also rename the storage area under your name where the program preferences are stored.  Now reinstall Poser.  This will insure that there are ot bits left over from a prior install that might be the problem.

Poser 5, 6, 7, 8, Poser Pro 9 (2012), 10 (2014), 11, 12, 13, 14