After using Movie Studio 13 Platinum for the last several years with no issues a couple days ago the program started losing its mind. The Explorer window would no longer populate with files or folders. After messing around with that for two days I finally just reinstalled the program clean. Now the Explorer window is working as it's supposed to, but I can no longer download YouTube videos and use them in a project. Whether I try to drag and drop them from a Windows window or select them from the Explorer window they will not go into the timeline. Oddly enough, any YouTube videos I had downloaded before this issue still go into the timeline with no problem. YouTube has not changed its MP4 codec, so the problem is with the program itself. Any ideas on what might be going on or how to fix it? I appreciate it.