I'm running a macOSX version 10.2.8 and everytime I try to open my AVID Xpress DV 3.5 it starts to scan my hard drive and around the 40 percent mark it freezes. I can still move my mouse but the scan stops. Is my problem the AVID I'm running or do I have to disk defrag my mac? Any help would be great. Thanks for your time.