Hi there, 

I’ve recently reformat my MacBook Pro as there was a software error issue. Before formatting, I could view all my videos on Aperture, but after formatting, reinstallation of Aperture and opening the Library, Aperture no longer display my High definition videos. Only those without HD were able to play normally.  What happens is that whenever i click on a HD video, it takes me to a blank full view, the slider still plays but with no sounds nor images. Not sure if this is a temporary problem because HDs used to work on Aperture. Anyone came across this problem before that can help shed some light, please? 

Thank you for your time

N