MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.

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Ah, that could be it. I upgraded my Marlin a couple of month ago, but I mainly print in PLA without heated bed anyway so i may have just not noticed the problem. Glad I'm not just loosing my mind, I'll try going to an older version of Marlin tonight and report back