I hate upgrading to a newer version of SketchUp. However when I finally got around to upgrading from 2017 to 2018, I’ve found that my Extensions Warehouse indicates I have all my 2017 plugins, but they are actually not in 2018. So when I select them, I only get Disable or Uninstall options within 2018, I can;'t install them again. When I try to uninstall them from 2018 (with the intention of reinstalling them) I get a error message “The extension could not be uninstalled for an unknown reason.” I’ve checked my AppData plugin folders and they are in the 2017 plugin folder but not in the 2018 plugin folder. If I manually copy them over, they still do not load in 2018. How do I get my 2018 setup the same way my 2017 was? I already have to create new toolbars (to match 2017), re-create my trays and manually copy over my custom templates - argh. Why can’t SU just migrate these settings after all these years!