OK, let's take this tack: first. what do you mean by: "the license.dat file has been changed several times"?
Second, what CodeWarrior tools are you using? You've stated that the version is v10.1 (which helps a lot, really), but are you using CodeWarrior for MCUs or CodeWarrior for Power Architecture?
Check your e-mail. I have sent you a temporary license file. If it works, then the other company has problems with its licensing mechanism. If not, then something is wrong with your CodeWarrior installation. Either way, hopefully this will get you unstuck.
I would contact your local Freescale representative and work with him on getting this problem fixed as soon as possible. You've been stuck for some time now without our tools working, and that does not help either you or Freescale.
Get back to me if the license runs out and you are still stuck on the license issue.