DDS texture in assetviewer

Hello everyone. I’d like to create my own custom camouflages for vehicles, but I’m having trouble obtaining the normal map. When I use “assetviewer,” it exports a corrupted texture file that won’t open in any program. It’s possible that a recent update broke something, making it inaccessible for now. If any of you know how to open these normal maps, I’d really appreciate your help!