I don't know what is causing the failure. That is really weird. But the good news is this weekend the testing for the Marlin Release Candidate is happening. If things go as I expect, this branch is probably going to be promoted to 'Stable Release' status. https://github.com/Wackerbarth/Marli.../Configuration

Do you feel like crossing your configuration.h settings over to this branch? It is going to be much easier to support that branch going forward.