Changes made in OS X El Capitan (10.11) have resulted in the loss of some serial port functionality. This change can potentially cause Cura LulzBot Edition to fail to connect to your LulzBot 3D printer. This appears to occur with both clean installs of Cura LulzBot Edition and existing users that upgrade from previous versions of Mac OS X. If you have not upgraded to OS X 10.11, you are not affected. Hold off on upgrading your operating system until a fix is developed. We are working on a fix for affected users.
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