@video-eta said: Tried many things like reinstalling Isadora or setting up a new session. I have run a test patch on MacOS Catalina 10.15.3 for three hours using exclusively MP4 movies as you have in your patch. It ran without indcident. No crashes of Isadora, no crashes of the Background Movie Player. I am awaiting your answers to my questions in the ticket system and will proceed once I hear back from you.Best Wishes,Mark

@HelenDeneb look at this post to see how it works: https://support.troikatronix.c...i don't have isadora now with me to give it a try but maybe try to put the activate scene actor inside the scene you want to activate. So when you press the letter for the scene you want live, it will stay activated.

thanks. because there is no time I went back to a previous version of my patch, that solved it. I actually use a very large .png file (because it's the only way i know to show fotos in rapid random sequences, I pan around the big file, real smooth and 60fps).the error is much more likely to happen when the scene jumps have a fade time > 0. I assume that means running both scenes and obviously may be problematic.awaiting version 3 i do not think it's worth the while to check this all out. it may be ok in version 3.cheers h