A new version of XRoar was just released the the day. Perform an “Update CoCo-Pi from git repo” on the Administration (Utilities) Menu and then install this latest package.
The latest version of MAME is ready for your CoCo-Pi. When updating your CoCo-Pi, please make sure to select “Update CoCo-Pi from git repo” and “Run CoCo-Pi fix script” in order for all the changes to be applied. Install the latest MAME package (from the same menu). Select mame-0.249-1 as the default version.