How it works with the .sat files?

Hey Guys,

i want edit : "Dungeon1_384_444_0.sat" and if i open the file with Wizatek sat converter tool, than i get this:

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Image is unusable

And if i create a own .sat file with the World Editor, than is the size to high...
1.How i can edit the file size to load my new .sat files?
2. Is the sat file Converter tool by wizatek buggy and useless?

I use the public 2015 Files

Wizas Editor only works til 2013 files, I've released a .sat multitool on lckb a while back, you can use it to convert old format to new and new to old as my painting tool is kinda buggy.