Before resorting to pod farm 1, I tried deauthorizing and reauthorizing both my computer and the ux1.
Now when I open pod farm 2, it comes up with the following dialogue:
UX1 Not Authorized for this Computer
POD Farm 2 has found a valid license on your UX1,
but you need to run the Line 6 License Manager to
allow POD Farm 2 to be run on this computer with
your UX1 (no additional purchase is necessary).
But when I open the license manager, there doesn't seem to be any option to allow pod farm 2 to run.
I have tried deauthorizing and reauthorizing the computer again but to no avail, but the fact I have made this much
progress suggests there must be a way to get it working without purchasing a new license.