Some conditions:
Cannot Upgrade SP2 EV to SP2 Full
Due to changes made in SP2 Full, the SP2 EV version cannot be upgraded to SP2 Full version.
If you have installed 2009 SolidWorks SP2.0 EV, you must uninstall it before installing 2009 SP2.0
Once 2009 SP2.0 EV is uninstalled, you can...