Thomas:

Not sure whether you are using a pre-compiled version of CMTK or building your own.

In the latter case, you may want to try the latest SVN/trunk version - it fixes a problem caused by the difference in path separator characters between Unix and Windows (i.e., "/" vs "\"). This should fix the problem of not getting the registration output written to disk.

At the same time, I cannot currently get the registration tool to work on my test system at all. There appears to be some additional trouble which leads to a crash before registration even starts. This issue appea4red some time after release 1.2.2, i.e., quite a while back (seems no one was actually using the Windows builds that I kept making). I am currently tracking this down but will have to come back to it after the weekend.

Best,
  Torsten