Empty cgx interface

Hello everyone,

I’ve just started to learn CalculiX with Gmsh, but it doesnt really work. I opened a simple beam (step-file) with Gmsh and converted it to geo-file by Creating a physical group (Volume). Then I created a 2D-mesh. After that I exported it to an inp-file for reading it with CalculiX Launcher. Finally I converted it to inp-File for Python-script with the launcher. But if I run the CGX-Preprocessor an empty cgx appears. Did I do anything wrong?
(following picture)

Maybe something problem with the converter itself, alternatively GMSH can export directly as INP file format. Any unwanted element generated can be view and remove by CGX with ‘print set’ and ‘zap eltype’