Error message "Generative Extend doesn't support the resolution..."

[EFiumi]

Hi! 

I'm trying to extend footage in Beta but it's giving me an error message: "Generative Extend doesn't support the resolution, color space, audio channel format of this clip." I'm editing .mxf footage.
Thanks,

Elettra

[Ann Bens]

https://community.adobe.com/t5/premiere-pro-beta-discussions/now-in-beta-generative-extend/m-p/14920...