Thank you all for all the great feedback on the builder extension, keep it coming! Apologies for the docs, we're still tuning those as the UI freeze didn't happen until last week. For those that don't know, to install the VSIX you will need to do so from inside VS Code. Double clicking the file will not work. This workflow goes away after this beta as users will simply search for the extension and install from inside VS Code. 🙂