I just updated to macOS Catalina (I have an iMac 27" from 2013), and now my MP3 files in my project are marked as "Sample offline". If I right click and choose "Show in Finder", Ableton shows me the MP3 file in Finder, so it knows where it's located.
But here what's really strange: If I try to drag and drop the MP3 file back into the project, I just get a very thin box in the timeline, and if I zoom in there really nothing there. The wav files in the project are still there, and I can also drag and drop them into the project.
Does anyone know how I can solve this problem? Do I need to update to Live 10? I have Ableton Live 9 Suite by the way.
I hope someone can help me