I need the Enterprise 17 version to install as i am being instructed by Intuit support to install to fix my upgrade to Enterprise 20 but no matter what version of windows 7, 8.1, 10 PRO i get the same Null Error. This is not acceptable why to force an upgrade buy not even allowing an upgrade. INTUIT FIX THIS INSTALL ISSUE SO I CAN UPGRADE NOW!!!!!!!!!! This is nuts. You stopping my cash flow!!!! FIX IT!