I have some boxes for "Saguro Desert" ans "Mixed saguro desert"

[Pierro21]

Please help me.

[matias93]

It means you haven't installed all the dependencies (in this case, tree packs), or that the installed dependencies were corrupted when installed, or in the last case, they aren't dat-packing tolerant.

Try checking for required and non installed dependencies, if that fails, try downloading and reinstalling them all again, and after that, exclude them from dat-packing if you use that tool.