Hmmm, apparently this is a small mistake in MoI's STL output - there is a structure that looks like it is supposed to be used to label different objects, but apparently it is not supposed to be used this way.

So I should be able to fix this up easily for the next beta.

- Michael

This was definitely a bug in MoI's STL export when there were multiple objects involved.

I've fixed this for the next beta, and also switched to write the more compact "Binary" type of STL file variant by default instead of the plain text version. You can still write a plain text type if you want by changing a setting in the moi.ini file.

- Michael