@Johan Cante You might try setting all log categories to verbose instead of INFO (level 4 versus level 3). It is unclear what is happening in the log without more information. If you can reproduce again with a verbose log, then I might be able to get to a resolution.

I am pretty sure I'd see an exception in the logs if the messaging host failed to start (because the extension was either not installed or not enabled), but that is something you might validate.