So I was working as usual, and suddenly AE showed up an error: "Cant ... Audio and Video... different..." so the program told me that 16 Videos aren't available anymore so they were set offline. Heres the thing... After I relinked them (even though they were still saved at the same spot in the same folder and I didn't chance a thing about them...) AE said that all the files changed their size from 1920x1080 to 1x1... 1x1?!?! How/why should I even do that?? Also the text told me that I need to do the motion tracking, camera tracking stabilizer and all that stuff again. Now heres another thing: I can't close the error windows. I can go on clicking ok for the rest of the day. It won't stop. There are tons of errors appearing on my macs screen. So HERE's the crazy/funny part: I deleted After Effects today for the 3rd time. Every time I reinstall the program after deleting it, it works perfectly fine and opens the project the way I want. Without any errors or problems... PLEASE give me a solution. It happened again and I can't reinstall it again and again... I don't even have time for that.