Either do a Clean Install by reading the instructions on how to do one in the “Sticky” section of the forum.
OR
Exit StreamFab. Load up a Task or Process Manager, and terminate every StreamFab-related program/process that is still running in the background. Possible processes still running are StreamFab64.exe, QCef.exe, YoutubeToMP3Process.exe, or YoutubeToMP3Service.exe. There might be others found at C:\Program Files\DVDFab\StreamFab that are still running, but I haven’t seen them. Make sure you terminal all that are still running, no matter how many times they appear. For reasons unknown, SF is sometimes not closing all processes lately when the program itself is exited. This is causing lockups and crashes. A long time ago, it was just QCef.exe that caused this problem. That was eventually fixed, but now it is back, and it is including other SF program/processes as well. @Wilson.Wang , you might want to have the developer look into this.
