I am considering a fresh install of FS9. Over the last year and a half that I've been using it I've done a lot of experimenting with different settings, add ons, etc. I've pretty much narrowed down my simming to the type of flying I like to do and since my sim has been having some crashing problems over the last couple months (with no changes in computer hardware), I was hoping a fresh install might cure the crashes. If I uninstall and reinstall FS9 does RC4.3 require a fresh installation (the crashes occur regardless of RC4 usage or not so I know they're nt related to RC4.3).

i would uninstall it, just to be on the safe side