QTR-Quadtone RIP

I am using QTR 2.5.2.1 on a Windows XP machine.  I keep getting an 
error message when trying to linearize that reads:

"Invalid linearize curve -- not constantly increaseing.  Curve 
Creation failed."

I export data to a tab delimited text format and drag it onto the QTR-
Linearize-Data.exe file and I get a nice smooth ramp without any 
reversals reversals in the density or luminance data.  Then I copy 
the "linearize" data line in the bottom of the generated text file 
and paste it into the Linearization window of the curve creation 
module.  The original data looks fine to me.  

What the heck am I doing wrong?  Below is the linearize data for this 
file:

QTR-Linearize-Data version 2.5.2.0

LINEARIZE="95.63 93.09 88.98 85.03 81.23 76.85 71.99 68.03 63.64 58.9 
53.9 49.73 44.41 39.95 34.64 28.78 22.71 15.46 10.57 6.85 6.39"

Thanks, Lou Dina