Earlier this week, we released RBTools 0.7.8 with some great improvements to the macOS and Windows installers. Unfortunately, the macOS installer build was built in the wrong environment, leading to incorrect paths and a failing rbt.
The new 0.7.9 release contains a fix to the installer generation process to prevent this from happening again. We've rebuilt and carefully checked the new installer build, and it should be good to go.
If you tried upgrading to the 0.7.8 installer using macOS and had trouble, please give 0.7.9 a try. You can get it from the downloads page. If you installed on Linux or Windows, you don't need to worry about this release.
Note that you might also find a /Users/chipx86 directory on your filesystem from the bad installer. This is an artifact of the broken build. You can safely remove it.
See the release notes for more details.