You are trying to open a database created in a newer version (e.g., CAMduct 2015) in CAMduct 2013. Fix: Databases are forward-compatible but not backward-compatible. You must export your fittings as .ITM files from the newer version and rebuild the MAJ in 2013.
: For versions 4–5 years old, users must sign in and use the "Ask the Assistant" feature to request a download link. Legacy Requests Autodesk Fabrication Camduct 2013 Download
As the progress bar crept forward, Elias thought about the chaos of the previous week—three wasted sheets of heavy-gauge steel because of a manual calculation error. CAMduct was promised to be the "brain" of the operation. It wouldn't just nest the shapes; it would understand the pressure classes, the seams, and the flanges. The Transformation You are trying to open a database created