In case you wish to upgrade your installation of Modelur, there are 2 ways to do it:
Via Extension Manager
1. Open SketchUp
2. Open menu Extensions > Extension Manger
3. Install RBZ file via Install Extension button:
Manually (completely refresh install):
1. Go to %appdata%SketchUp\SketchUp SU_VERSION\SketchUp\Plugins\
2. Delete modelur.rb file and /Modelur folder in this folder
3. Extract contents of RBZ file (which is just renamed ZIP file) to this same location (you shall see back modelur.rb and /Modelur)
