Hi,
I also have a rather disconcerting and random issue with this plugin on SketchUp Make 2017.
This happens most often in the simplest and yet most useful case, that of creating a mesh between 2 contours.

Thank you for finding a solution because I obviously have a user license and it is a plugin that I use frequently for the realization of artistic sketches and i really need it !

(just in case, windows 10 64 is up to date, as well as the graphics card (nvidia) drivers and of course the latest LibFredo6)

Error: #<NoMethodError: undefined methodplates' for nil:NilClass>
c:/users/alexandre/appdata/roaming/sketchup/sketchup 2017/sketchup/plugins/fredo6_curviloft/curviloftspline.rbe:478:in spline_simple_construct' c:/users/alexandre/appdata/roaming/sketchup/sketchup 2017/sketchup/plugins/fredo6_curviloft/curviloftspline.rbe:247:in spline_junction_construct'
c:/users/alexandre/appdata/roaming/sketchup/sketchup 2017/sketchup/plugins/fredo6_curviloft/curviloftalgo.rbe:497:in generic_junction_construct' c:/users/alexandre/appdata/roaming/sketchup/sketchup 2017/sketchup/plugins/fredo6_curviloft/curviloftalgo.rbe:1418:in junction_construct'
c:/users/alexandre/appdata/roaming/sketchup/sketchup 2017/sketchup/plugins/fredo6_curviloft/curviloftalgo.rbe:407:in block in link_construct_all' c:/users/alexandre/appdata/roaming/sketchup/sketchup 2017/sketchup/plugins/fredo6_curviloft/curviloftalgo.rbe:407:in each'
c:/users/alexandre/appdata/roaming/sketchup/sketchup 2017/sketchup/plugins/fredo6_curviloft/curviloftalgo.rbe:407:in link_construct_all' c:/users/alexandre/appdata/roaming/sketchup/sketchup 2017/sketchup/plugins/fredo6_curviloft/curviloftalgo.rbe:396:in link_calculate_all'
c:/users/alexandre/appdata/roaming/sketchup/sketchup 2017/sketchup/plugins/fredo6_curviloft/curviloftalgo.rbe:369:in prepare_all' c:/users/alexandre/appdata/roaming/sketchup/sketchup 2017/sketchup/plugins/fredo6_curviloft/curviloftalgo.rbe:362:in proceed'
c:/users/alexandre/appdata/roaming/sketchup/sketchup 2017/sketchup/plugins/fredo6_curviloft/curvilofttool.rbe:641:in transition_to_loft' c:/users/alexandre/appdata/roaming/sketchup/sketchup 2017/sketchup/plugins/fredo6_curviloft/curvilofttool.rbe:334:in activate'
c:/users/alexandre/appdata/roaming/sketchup/sketchup 2017/sketchup/plugins/fredo6_curviloft/curvilofttool.rbe:67:in select_tool' c:/users/alexandre/appdata/roaming/sketchup/sketchup 2017/sketchup/plugins/fredo6_curviloft/curvilofttool.rbe:67:in launch_loft'
c:/users/alexandre/appdata/roaming/sketchup/sketchup 2017/sketchup/plugins/fredo6_curviloft/curvilofttool.rbe:53:in action__mapping' C:/Users/Alexandre/AppData/Local/Temp/Fredo6_LibFredo6_TemporaryFiles/data6.rb:65:in call'
C:/Users/Alexandre/AppData/Local/Temp/Fredo6_LibFredo6_TemporaryFiles/data6.rb:65:in launch_action' c:/users/alexandre/appdata/roaming/sketchup/sketchup 2017/sketchup/plugins/fredo6_!libfredo6/lib6plugin.rbe:240:in launch_action'
c:/users/alexandre/appdata/roaming/sketchup/sketchup 2017/sketchup/plugins/fredo6_curviloft/bootstrap_curviloft.rbe:76:in launch_action' c:/users/alexandre/appdata/roaming/sketchup/sketchup 2017/sketchup/plugins/fredo6_curviloft/bootstrap_curviloft.rbe:91:in block in startup'
...
Error: #<NoMethodError: undefined method plates' for nil:NilClass> c:/users/alexandre/appdata/roaming/sketchup/sketchup 2017/sketchup/plugins/fredo6_curviloft/curviloftspline.rbe:478:in spline_simple_construct'
c:/users/alexandre/appdata/roaming/sketchup/sketchup 2017/sketchup/plugins/fredo6_curviloft/curviloftspline.rbe:247:in spline_junction_construct' c:/users/alexandre/appdata/roaming/sketchup/sketchup 2017/sketchup/plugins/fredo6_curviloft/curviloftalgo.rbe:497:in generic_junction_construct'
c:/users/alexandre/appdata/roaming/sketchup/sketchup 2017/sketchup/plugins/fredo6_curviloft/curviloftalgo.rbe:1418:in junction_construct' c:/users/alexandre/appdata/roaming/sketchup/sketchup 2017/sketchup/plugins/fredo6_curviloft/curviloftalgo.rbe:407:in block in link_construct_all'
c:/users/alexandre/appdata/roaming/sketchup/sketchup 2017/sketchup/plugins/fredo6_curviloft/curviloftalgo.rbe:407:in each' c:/users/alexandre/appdata/roaming/sketchup/sketchup 2017/sketchup/plugins/fredo6_curviloft/curviloftalgo.rbe:407:in link_construct_all'
c:/users/alexandre/appdata/roaming/sketchup/sketchup 2017/sketchup/plugins/fredo6_curviloft/curviloftalgo.rbe:396:in link_calculate_all' c:/users/alexandre/appdata/roaming/sketchup/sketchup 2017/sketchup/plugins/fredo6_curviloft/curviloftalgo.rbe:369:in prepare_all'
c:/users/alexandre/appdata/roaming/sketchup/sketchup 2017/sketchup/plugins/fredo6_curviloft/curviloftalgo.rbe:362:in proceed' c:/users/alexandre/appdata/roaming/sketchup/sketchup 2017/sketchup/plugins/fredo6_curviloft/curvilofttool.rbe:641:in transition_to_loft'
c:/users/alexandre/appdata/roaming/sketchup/sketchup 2017/sketchup/plugins/fredo6_curviloft/curvilofttool.rbe:617:in notify_edge_picked' c:/users/alexandre/appdata/roaming/sketchup/sketchup 2017/sketchup/plugins/fredo6_!libfredo6/body_lib6edgepicker.rbe:539:in call'
c:/users/alexandre/appdata/roaming/sketchup/sketchup 2017/sketchup/plugins/fredo6_!libfredo6/body_lib6edgepicker.rbe:539:in notify_action' c:/users/alexandre/appdata/roaming/sketchup/sketchup 2017/sketchup/plugins/fredo6_!libfredo6/body_lib6edgepicker.rbe:582:in terminate_current_selection'
c:/users/alexandre/appdata/roaming/sketchup/sketchup 2017/sketchup/plugins/fredo6_curviloft/curvilofttool.rbe:279:in execute_validate' c:/users/alexandre/appdata/roaming/sketchup/sketchup 2017/sketchup/plugins/fredo6_curviloft/curvilofttool.rbe:269:in execute_from_palette'
c:/users/alexandre/appdata/roaming/sketchup/sketchup 2017/sketchup/plugins/fredo6_curviloft/curvilofttool.rbe:217:in notify_from_palette' c:/users/alexandre/appdata/roaming/sketchup/sketchup 2017/sketchup/plugins/fredo6_curviloft/curviloftpalette.rbe:529:in call'
c:/users/alexandre/appdata/roaming/sketchup/sketchup 2017/sketchup/plugins/fredo6_curviloft/curviloftpalette.rbe:529:in block in init_palette' ...

Thanks, indeed, I don't know why I never thought of that...

Hi,

Why the "selection arrow" is not on the master toolbar list ?

This would be very useful for me to customize a side toolbar on a single column rather than the two columns of the "large toolset" bar.

I know that I can use the spacebar at any time, but it would be more practical for me to have the "selection arrow" icon accessible.

Thanks.