When I try to drag an mpg (mpeg2) file into Movie Studio 15 Platinum or render a movie using the MainConcept MPEG-2 format, I get a pop-up window that reads "Hint" "The activation code you entered is invalid. Please make sure you entered it correctly. If the problem persists, please contact the MAGIX support." (The MainConcept AVC/AAC format works correctly.)
How do I correct this problem?