I'm having an isue with my Inventor professional 2011 where the toolbars are not visible. So I tried to reinstall it. But when trying to do so there's an error saying: Missing Inventor. So I tried to upgrade it to inventor 2012. Again when trying to install; this new update, there is an error saying that the file inventor.msi cannot be found. You have the option to brows in your computer to find it. but as it seems, inventor.msi is in this path D:\Program Files\Inventor\x86\inventor\ which does not exist on my computer. Is there a way that I can uninstall this program, and then install a new one?