Resolving "Exception TPen in module ModelBuilder.exe" in ModelBuilder
"Exception TPen in module ModelBuilder.exe" in ModelBuilder
Error message:
“Exception TPen in module ModelBuilder.exe”

Cause
This error is typically caused by poor scan quality, including:
- Holes in the scan mesh.
- Scan artifacts or irregular surfaces.
- Poorly trimmed scan edges.

Resolution
Step 1: Return to the "Prepare scans" step.
Step 2: Use the "Wax Knife" tool to smooth holes and rough areas of the scan.
Step 3: Trim rough edges and remove areas containing holes or scan artifacts.
Step 4: If the scan cannot be repaired sufficiently in Model Builder, repair it using ShapeDesigner or another mesh editing application (for example, Meshmixer).
Step 5: If the scan quality is too poor to repair, acquire a new scan and restart the workflow..
Contact 3Shape Support if you have any further questions.
For full information on correct usage consult the official Safety and Setup Guide and the most current Manual.