Helped my Dad tonight to repair his installation of TurboTax 2008. TurboTax couldn't update since it was missing "intuit.spc.esd.winclient.application.update" dll. We couldn't uninstall TurboTax because it was not listed in Add/Remove programs. Finally put the CD in the E drive and entered the manual flush mode to reinstall:
worked like a champ after that.