Trouble exporting to .stp file

When we try to export from . slt file to .stp file we are getting an error that STEP export does not support polygon meshes. Do we need to change a setting in our export options? Does this impact the design in any way? Thanks for your help, Jay

Hi Jay- there is no setting… Rhino does not export meshes to STP. Is the only version of the model that you have a mesh? You are not, maybe, getting STP muddled with STL?