djeggoyo,
You definitely can install the UX2 software on more than one computer to use the hardware on both.
Also, to activate POD Farm, make sure to run Line 6 Monkey with the UX2 connected, and click on the 'Activate Purchase' button in the 'Optional Add-Ons' tab of Monkey. In the window that pops up, type in the word:
refresh
all in lower case letters to authorize the plug-in and model packs that are on your UX2 with the computer(s).
If the problem persists, please disconnect all other USB devices from your computer (except for a mouse and keyboard) while troubleshooting this issue. Completely remove ANY USB hubs from the computer, even if not in use, and test the UX2 on all of the USB ports on your computer.
Let us know if you need further assistance.
Regards,
Line6Hugo