DNACalibration tools dna_viewer_export_fbx errors

I’m getting the error # Error: ImportError: file line 73: cannot import name ‘RotateCommand’ from ‘dnacalib’ (unknown location) when attempting to run the dna_viewer_export_fbx example from the dnacalibration examples.

is there a fix or have I set it up wrong? the dnaviewer script works correctly for me