You may want to start fresh. Uninstall realvision, delete all the loose files you had added from your original realvision install, and then uninstall ENB. Verify game integrity through Steam (open steam, right click Skyrim, click properties, click local files tab, click verify game integrity button), in case you accidentally deleted any vanilla Skyrim files. Then reinstall .250 ENB binaries and make sure to backup the vanilla enblocal.ini and enbseries.ini in a safe place. Then reinstall realvision and see what happens.