You should bring this to the attention of the Pharo community. They’d only be too happy to help.

I have not personally experienced the Monticello failures you speak of, so something is definitely hinkey.

Get the Medium app

A button that says 'Download on the App Store', and if clicked it will lead you to the iOS App store
A button that says 'Get it on, Google Play', and if clicked it will lead you to the Google Play store