What are your full Ae and Os version numbers?
Try deleting your cache completely from edit->preferences-media&disk cache (both options)
Try restarting your software and reboot your computer
see if you can find a better advice here: "Stuck" Image in Transparent Background
I managed to fix it but I'm not too sure how. Refreshed the Cache and rebooting but no luck, I then tried re linking all my footage and it sort of solved the problem, also messing around with the camera view. Not exactly sure what fixed it but it seems to be okay now!
Many thanks for your help!
Good job!. By relinking you mean change the folder name and let Ae find one so it will relink all of them?
Yes, and I alt dragged the imported layers onto the accompanying layers in the composition panel.
I am not sure exactly why you would need to alt drag if the source is the same. You probably mean you have imported the layers again and replaced the source with alt drag. What I meant is to force Ae to relink the footage by changing the folder name in your computer. This will make you footage appear missing and you would have to find one, and the others will follow. Well, now the problem
is solved so next time!