Hi,
a completely New Gui has landed! 
kicad StepUp new Gui
In the new Gui I added some improvements …
here the most relevant:
1. the GUI is based on Icons; so it is smaller and it has not problems with fonts in different OSes nor with Themes (the icons are embedded so StepUp is just one file as before)
2. the GUI can be floating (as before) or docked left or right for a better UX
3. there are 2 new buttons for fusion and compound that will make life easier for users unaccustomed to FC; those are also useful if you load a STEP file with hierarchy in FC 0.17 which involves App::Part new TypeId… the macro is recursing each App::Part object and sub-objects considering their relative placement to make a simple copy of the hierarchy and let the Part be exportable as STEP file again
and some other useful features:
4. there is a new button to import/add a STEP/FCStd model directly from the tools
5. there is a new button to export STEP file directly from GUI
6. when exporting a wrl/STEP model the Info dialogue has a link to directly open the destination folder
7. there is a hyperlink to the ksu-config.ini at the top of edit and help menu, to direct access it from the GUI
Thanks to those who have tested the preview and provided suggestion to improve it!
Maurice