Hi there

If you have Poser 11 then you should have PoserFusion,I don't use PoserFusion I rather export as OBJ if I want to render,regarding yours question,did you tried to uninstall plugin or even can you check path of plugin in 3DS MAX,this plugin should be located in 3DS MAX folder("C:Program FilesAutodesk3ds Max 2014plugins) and if this doesn't help navigate to Appdata something like this C:Usersyours nameAppDataLocalAutodesk3dsMax2014 - 64bitENU

Hope this helps

Thanks,Jura