Black court issues

Hello guys i've created my own court template on Photoshop and I wanted to see how it fits ingame during the process. I've exported the court from photoshop as a .png and droped in paint.net to save it in .dds (BC7). Then I saved it, and rename it as "floor_clutchtime_court.32098eb5ced33ec2" and i replaced it for another on a downloaded modded court. Every time I start a game with the team, my court looks pitch black.

What I am doing wrong?
Thx guys

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If you have Photoshop, why are you using Paint.net? Just install the DDS plugin for Photoshop, then extract the court as a DDS - BC7 Linear, then drag the DDS into an already made floor file template.

I wasn't aware of those plugins. I've already try it with photoshop dds plugin, and it doesnt work anyway so... Now i know that it's not a Photoshop or Paint.net problem...

The dds format has to match the format in the scne file
If its black it does not