eviewer and stl

I try to open many sort of stl files (complex and simple) with eviewer and it is not possible.

Do you know why ?
Is it a bug or a limitation of the product ?

Thank you for answer

Mr.Robert Jewell's picture

I cannot pull up pictures from my documents. I believe my kids have gotten on here and deleted my eViewer. can you help? I Thank You in advance.