QTR-Quadtone RIP

I am a long time QTR user coming back to it (thank you Print Tool!!).   I am trying to create a QTR icc profile.  I have made many on windows machine, but now I am trying on a mac.  I use a densitometer and enter my results in a text file.  I have one column labeled gray which has the step values and another column (offset by 2 tabs) labeled Dens.  I entered the values and dragged the resulting text file on to the QTR createicc applet.  I have done it in finder, dragged it (the create icc app) to the desk top and done it there and anything else I could think of.  I have tried to use both the gray and the rgb icc create applets.  Nothing happens under any of these circumstances.  As I understand it, I should get an icc profile and the text readout in the same location as the text file.  I have even gone back to my windows machine and created a profile to confirm my working methods and numbers.   Any ideas what I might be doing wrong?  I'm a little short on hair to begin with and can't afford to loose any more.
Thanks
Peter