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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Since this also adds a custom machine profile to prevent Cura screwing with the jerk and acceleration settings, this can cause conflicts. Try renaming your existing profile.

Also, I'm currently using Cura 4.1. I will upgrade to 4.2.1 and see if it has trouble importing the profile; if so, I'll try to fix the problems.