swellking So I should install the latest version of Buildr? Can I be assured that the new version will maintain everything I built and customized?
You may download and install the latest version i.e. 1.4.0 from here and module from here
Would suggest to also take backup of your site before performing aforesaid steps, in case rollback required whilst facing any issues e.t.c as the retention of customizations or changes will depend majorly upon certain factors if you have made changes in appropriate files e.t.c. which do not get overridden
please remind me how to install the latest version?
You can install new version directly over the current version through extension manager . Uninstallation is not required.