Hi Rico, it's hard to tell what could be going on just from a description like that. I need to see actual files that are having problems to be able to give any good information on what's happening. If you need to keep them private you can e-mail them to me at moi@moi3d.com .


> Has there been a change in the STEP format recently ? ( in the last year or so)

Well, MoI version 4 has come out within the last year and it does have an upgrade to the STEP library that it uses. But it is a new version of the same library that it has been using for a long time.

Do you mean that the same STEP files are coming in differently into MoI version 3?


One thing you can try for problematic STEP files is to use CAD Exchanger to convert the STEP file into a version 5 .3DM file and then read the .3dm file into MoI.

- Michael