Attached Link: Files Changed updating Poser from SP2 to SP3

If you didn't back up your original Poser 6 with SP2 installation folder, you won't have the proper files to replace the changed ones. I have my runtimes external except for python scripts and their necessary files and the default installed files with Poser 6 so it's under a gig to back up the folder on my system. 

I had to resave my preferences (preferred state) and launch with my preferred state after checking Autofit on to keep it that way, the default is off.

I made a page (see link) with a list of the files that were changed by the the SP3 installation after doing a compare between the original install with SP2 and the SP3 updated folders.  I didn't include files in the Runtimeprefs folder as they change each time I run the application.  I do not guarantee that restoring only the files on my list will fix any problems and it may cause others, use the information at your own risk.