Microsoft loves to push out updates to Windows 10 whether we like it or not, sometimes, on some machines, that will cause problems with video in OnCue. It's not even always confined to Windows 10. But, not to worry, there is always a way to fix this sort of thing, you just need to get your codecs back in order.
These are the steps to fix the Active X Error issues in Windows 7, 8, 8.1, and 10. These include errors showing Active X - #8, Active X- #9 and Active X - #0.
Please follow these steps in the order in which they are listed.
1. Download and Install the K-lite Basic Codec Pack. (https://codecguide.com/download_k-lite_codec_pack_basic.htm) BE CAREFUL to leave all defaults in place and click NEXT until you get a prompt that will give you the option to DECLINE. You should DECLINE any offer for 3rd party apps.
2. REBOOT your computer, then launch OnCue and the error should be history. If not, proceed to the next step.
3. The Legacy Player preferences in OnCue. Toggle it both on and off to see how it affects the ability to fix the Active X Error. Please look at the note underneath the check box when you toggle.
4. If it is an *.MP4 file, it could be encoded with AVC or a variable bit rate the only fix is to re-encode the video. See this article for the specifications - Video Specifications
5. If it is an *.MPG file, it could be an MPEG-2 file. You will need to re-encode the video. Video Codec Problems: MPEG-2 hiding in plain sight.
If these steps don't make all of your troubles melt away, let us know and we're here to walk through whatever it takes.