these error messages are from old (pre-RF3) versions of Mechanic and ShapeTool extensions.
to upgrade your extensions from RF1 to RF3, try the following:
- launch RF3 in Safe Mode (press Shift when clicking the application icon)
- uninstall all installed extensions (in Preferences > Extensions)
- download and install Mechanic2
- use Mechanic2 to install extensions
hope this helps!