When you open up or import a file using the Anycubic Slicer Next and then export it, and then hit print, you sometimes get a message underneath where it says please select a printer saying " model mismatch unable to initiate printing " This is because sometimes the 3d print file comes with the printer profile it was originally made on so it changes your own printer to whats on the file. This video shows you how to change it back to your own 3d printer.