Cant save as PDF or print to PDF - Mathcad 10

Hello. I'm using Mathcad Prime 10.0.1.0 and I'm having trouble saving to PDF. Neither the built-in PDF export nor Microsoft Print to PDF works. I found this thread, but the solution seems to apply only to version 12, not version 11 or earlier. Can anyone help? https://community.ptc.com/mathcad-7/save-as-pdf-or-print-to-pdf-causing-unexpected-error-mathcad-prime-12-175521