I recently decided to downgrade my blue clickwheel nSpire to OS2.1, but TI Nspire Computer Link is missing, and since TI messed up so badly, most people can't even run the PC versions below 1.6. I found 1.2 on a CD and 1.3 and 1.4 online, none of which work at all. 1.3 and 1.4 give me a "communication library" error and 1.2 does this on XP but doesn't even install on Win7. I did try TiLP2 but it literally never detected my calculator while it was on, plugged into a USB port. What should I do or how can any of these be fixed? If anyone has a copy of link 1.6 I can run that without problems.