I have been learning OBS on a 2012 MacBook Pro running High Sierra. It has recognized several video sources such as an old Sanyo through a USB port and a Sony VX2100 through Firewire/iLink and has recognized external mics coming through USB. Today, I logged on and I saw my Sony on the screen, but then it disappeared. I could not access any input devices other than my internal mic which was playing but not identified anywhere and my internal video was nowhere. I can't figure this out. Earlier today I uploaded and installed the newest Safari upgrade. This took well over an hour. What is going on? Is there some way to reinstall OBS? (Oh, this is not necessarily a hardware issue because iMovie does recognize this stuff). What would cause OBS to stop recognizing inputs?