Hi,

I have tried multiple times to write out a very dense mesh combined with NURB surface data with Rhino 5.  It appears to write the file out but when I re-read the file in, I get an error stating that some of the geometry is invalid.  I finally found a solution which was to write the file out as a version 4 format, then it worked!  I would like to send a file to you for evaluation.  It's pretty big so I would have to send it via YouSendIt.

Please let me when I can do this.

Thanks

Chuck Rogers