Failed to write block bhkCompressedMeshShapeData

[z929669]

I work on Enhanced Vanilla Trees for SSE, and I'm unable to save just about every model due to this block-write error. I'm also unable to copy the collision branch as a workaround, due to the same error.

Surprisingly, I can make changes to models programmatically using Sniff and SSE NIF Optimizer, but editing UVs or performing other essential manual tasks is not possible without converting to json or some other format.

I get the same error using 2.0 Dev 7.

Thanks in advance