Version 2017 introduce yet another signing regime, which means unless you use an 'Unrestricted' loading policy you might get issues if it's not been re-signed for v2017, if an extension or plugin is 'unsigned' it should usually work when 'Unrestricted'. However, some unexpected changes in the way that SketchUp v2017 deals with an entity's ID etc have meant that some extension are now broken in v2017. Sadly one of these is my Extension-Tools... I am working on fixes, but a few of the tools are proving particularly recalcitrant... Watch for updates... If you find any tools which have been installed from their latest RBZ, and which seem not to work in v2017 please report them to that tool's author in its main thread. Please remember to provide any Ruby Console messages or on-load messages as might be relevant...

Thank you very much pbacot. It looks like I was doing half way right. I moved everything on the layer0, created a group but did not moved it to its own layer. You saved me another long day of despair...lol