Minecraft: Windows 10 Edition Compatibility issue

[JERisBRISK]

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I just tried using fNbt to load the level.dat file for a Minecraft Windows 10 Edition save and was met with two exceptions.

The first was that it was unable to detect the compression format:

System.IO.InvalidDataException: Could not auto-detect compression format.
   at fNbt.NbtFile.DetectCompression(Stream stream)

I tried to remedy that by explicitly calling nbtFile.LoadFromFile(levelDatFile, NbtCompression.None, null). This worked, but the next error I encountered was:

fNbt.NbtFormatException: Given NBT stream does not start with a TAG_Compound
   at fNbt.NbtFile.LoadFromStreamInternal(Stream stream, TagSelector tagSelector)

So, whatever Mojang did for the Windows 10 Edition of Minecraft seems to have introduced some compatibility issues with fNbt.

[tryashtar]

Try this:

 var file = new NbtFile();
 file.BigEndian = false;
 byte[] data = File.ReadAllBytes(levelDatFile);
 file.LoadFromBuffer(data, 8, data.Length - 8, NbtCompression.None);

[brammie15]

Try this:

 var file = new NbtFile();
 file.BigEndian = false;
 byte[] data = File.ReadAllBytes(levelDatFile);
 file.LoadFromBuffer(data, 8, data.Length - 8, NbtCompression.None);

How do i save the file then?