Sony Vegas Pro - AVI files - Win 10

[Connor]

I'm having a slight problem at the moment. I've recently moved to Windows 10 from Win 7. I've copied all of my video files and I've still got them now. However, when I try to import or drag and drop files into SV it get these errors.

http://i.imgur.com/dWThh4z.png <- When I import

http://i.imgur.com/BReyZAL.png <- When I drag files into SV

I've tried several codecs but it still doesn't let me use them in SV. I can open AVI files using VLC media player and that's about it. Before I installed VLC player, every time I opened an AVI file I'd only here the sound and couldn't see the video.

Any ideas on how I can fix this?

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