IE11 only seems to cause issue with P8/Pro2010. 

For the OP: how soon after the Windows update did you begin to have problems?  If it was right after, check your windows update log.  If you really feel some part of the update is the cause, uninstall all of the updates to the last date you were certain it was working.  You can reinstall the updates one at a time if necessary until you find the one that is causing the problem.  If it is a windows update issue, change your settings so that you receive notification of updates and can pick and chose those updates you want.

Another thing with P7 to try is going into the prefs folder and deleting the ini file.  Make sure Poser is closed before you do this.  When you launch Poser again, the ini file will be built.  It might take a bit longer to load as it rebuilds but it's no biggie.