Crash dump when trying to rotate object

[w3dut]

Quote:So, something can really not be good with the geometry - Wings3d "doesn't like that".
Did you imported it from other application?

Yes, it was converted from a STEP file (have done hundreds without an issue until this one.. something wrong with it obviously)

Quote:To try avoid it break you can try use Clenaup with RMB, when you can set the minor distance between vertices to be cleaned.

I'm afraid I don't know how to do that and to tell you the truth, I really don't know what you mean... I'm not familiar with those options.

Quote:Some problems are complicated to try suggest fix without have it on our hands (or seeing it).

Yeah... but sorry, I couldn't upload the model (100K over the upload limit). It's nothing special but it did have a lot of verticies.

But thanks for trying and for your advice.

Jeff