First question (not a criticism): Was there a reason that the company chose the MB 2X? Unless ABS plastic was a requirement, it is in most cases, best to start with a PLA printer. There are arguments to this topic, but using a PLA printer is easier, especially if your are new to 3D.
The X in the 2X denotes Experimental. It’s best to consider it permanently as a “Beta” release of MB’s dual extrusion machine; and purposely so. ABS is more susceptible to ambient conditions, slicing programming, tolerances…stuff. It’s a tinkerer’s printer for those with some experience,interest and time to Experiment. I work with groups new to 3D and I, and my fellow volunteers, always recommend a single extruder PLA machine.
As noted in other comments (I may be repeating advice of others, sorry) make sure you have the latest firmware update.
Makerbot has a new desktop for slicing: Makerbot Print. But, I would recommend firmly that you use the original Makerbot Desktop for the 2X. It’s tried and true and is hand-and-glove with the Replicator 2 through Replicator 5th Gens. Run through set up again. When setting nozzle height, the friction created using the piece of paper as the measurement should be SLIGHT. Too tight and your just making the nozzles plow through the paper, essentially in a furrow.
Keep us updated:)