The most common culprit. When you import a STEP, IGES, or Parasolid file from a native CAD system (SolidWorks, CATIA, NX, Rhino) into Esprit, the two kernels (geometric engines) attempt a "heal." If the exporting CAD had loose tolerances, the import will fail, creating edge cracks.

Highly recommended for intermediate to advanced DIYers – just don’t expect a pro-level invisible repair.

Downloading versions labeled as "crack fixed" from unofficial sources carries significant risks: