QTR-Quadtone RIP

I have run into an issue that perhaps someone can help on.  I prepared a series of QTR.icc profiles last week and double checked them against ABW stepwedges.  They look quite good and were all installed to the correct directory (I'm running a Win7 computer).  However, today when I went to print out some images using Lightroom, the profiles do not show up at all.  I double checked in Windows Explorer and they are all sitting there in the directory but are not recognized by Lightroom for some reason.  Has anyone else experienced this problem?  I prefer printing from Lightroom because it is more straightforward than Photoshop.

Profiles were all prepared with the most current version of QTR.