Incorrect path to mel files
The two path to source the mel files are incorrect.
https://github.com/liquidbuddha/CosmicGeometryToolkit/blob/1988d2fca220745879aaff8bbbcd5ae8f4fb8c17/intallfiles_FullKit/lbsToolMenuFull.mel#L14-L15
For the minikit the directory is actually named 'miniToolkit'
menuItem -p $MyMenuObj -l "mini kit" -c ("source "/Users/
For the full kit, remove 'lbsToolkit', the installation instruction tell you to place it directly in the maya 'scripts' folder
menuItem -p $MyMenuObj -l "full kit" -c ("source "/Users/
After making these changes I got a working menu in maya 2018. To actually start the windows for mini and full I had to make some more changes, see issue #8