The LaunchPad is known to be very flaky when used through a USB hub.
Make sure you can get one working reliably through the hub first!
I often use multiple LaunchPads simultaneously on my under OSX. The
(completely unofficial) OSX driver nicely generates multiple virtual
serial ports, and mspdebug can happily program a specific Launchpad on
your system. I'm not sure how well this works (or works at all) with
CCS under Windows.
-p.