@mattc said: def initialize() > sel=Sketchup.active_model.selection > SPP;;test_start > SPP;;check_selection(sel) > SPP;;test_end > end (4) The above is not correct. The initialize() method is only used in a class definition, where you wish to let the user create MANY instances of the object. Users will not need to create many copies of your plugin. Most plugins are code that needs only one copy, .. so it should be a module (inside your author module.) But a plugin module can have (and often does,) use custom class definitions and instances inside it's module. Later on, you will likely be creating a custom Tool class inside your plugin module.

@group-of-designer Install Sketchucation Tools: https://sketchucation.com/plugin/696-sketchucationtools

Ok, solved it in another way. Thanks anyway. Matt

@gade said: Hello, i'm very interested into your plugin but it's not working on my computer... is it possible to use your plugin with mac ? i have sketchup 8? please help me to use your plugin i would like to make a model ... Hi I will need some more informations to answer, I havn't used it in a long time, at least this version, but I see no reason why it should not work on Mac. You can also take a look here: http://www.papermodelers.com/forum/software/18100-spp-sketchup-paper-planes-tools-sketchup.html Greets Matt