When I try to export/import a model between RFEM and Rhino, I get an error regarding RF‑COM. "Export Error: Error to write data, message: The demo version of RF-COM allows models with a maximum of 12 members, 2 surfaces, and 2 solids only". How do I fix this?


Download the following link:


(1) Please close RFEM and Rhino.
(2) Open the ZIP folder and double click the *.rhi file.
(3) Select the "Anyone who uses this computer" option in the Rhino Package Installer.



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RFEM Main Program
RFEM 5.xx

Main Program

Structural engineering software for finite element analysis (FEA) of planar and spatial structural systems consisting of plates, walls, shells, members (beams), solids and contact elements

Price of First License
3,540.00 USD
RSTAB Main Program
RSTAB 8.xx

Main Program

The structural engineering software for design of frame, beam and truss structures, performing linear and nonlinear calculations of internal forces, deformations, and support reactions

Price of First License
2,550.00 USD