I made the latest update of AE CC 2017 and I've got a few crashes in the last few days since the update and another problem also happened.
I made a 30 sec seamless loop. I rendered it directly through ME(H.264, .mp4, 30fps). I played it and at about second 24 a single black frame appears. I exported it as .avi and quicktime from AE but it still renderes that black frame. I made a new project imported this project into a new composition with the same settings but it didn't work. I cleared the disk cache - still did not work.
How did you make you looping video. A single black frame is a very common mistake when trying to match first and last frames. You actually need to move the out point of your render back one frame. You could also have had a frame rate error. The frame rate of the comp must match the frame rate of the render exactly.
Thank you for replying, Rick.
I know how to make the loop. The comp is 900 and i render 899 so the last frame becomes the first. I saw that I had keyframes at the bad frame and I changed a little bit the settings of the keyframes there and after rendering again the black frame was no more.