Ouch! I still have a headache from trying to absorb VueScan, Profile Prism, QImage, etc.  I'm not too sure of my skill at judging the needed correction.  I'll have to dig out my old darkroom viewing filters.  Anyway, Terry, you have been most patient, and thorough, and I thank you for that.  You "are" a forum superhero.I'll get back and let yu know how this all works out.
 Wes

Terry, the color balance looks pretty good, but the skin tones are definitely darker than what I have on the calibrated monitor.  They also have a little more yellow, but I think that may be attributable to the darker tones.

 Terry,

 No patches are actually clipped, but are at maximum brightness.  They are Patches: 0, 21-25, 45, 49, 69, 136-140, 160, 462, 433, 441, 903, 924, 1344, and 2983. I understand the concept of the raw files.  In fact that's where I'm confused; If no color tab settings are applied, how can I adjust the overall brightness?

Thank you, Terry.  It looks like I was using the correct settings. I now wish i could figure out how to reduce the exposure of the raw file, from the scan, in order to reduce the number of clipped patches.

It occured to me that I should ask about printing the target.  Would it be appropriate to reduce the brightness (in Qimage) before printing.  Also, I'm a little unsure of print settings.  I'm printing in AdobeRGB color space because that is what I use for my printing.  I also have no profile set for the target print.  I don't use the "printer manages colors" setting.

I'm creating a profile with VueScan Pro and an Epson V500 scanner.  One thing that confuses me is that I don't understand how I can scan to a raw file, and yet reduce exposure so that I can reduce the number of clipped patches.  Color adjustments, as I understand it, have no effect on the raw file output.

Fred,

 I started with Ilford Premium Photo Pearl, because I have a lot of it, and like it.  I'll next try some of the other papers I use, such as the Epson Ultra Premium Lustre.  I'm assuming I'll be able to improve on most of the canned profiles, because I'm using Jon Cone's inks,  rather than the Epson inks.

Wes

I bought Profile Prism with considerable skepticism, that a software program, along with a scanner that I already owned (Epson V500) could provide results that could compete with a hardware solution.  I found it a little difficult to slog through instructions (though all the needed information seems to be there), but was finally able to get all scan settings correct. The instructions are good, but didn't seem to allow for my mediocre brain. At any rate, I finally got the profile completed, and reprinted a test image.  I was amazed at the improvement (for my Epson S/P 4900) and with how perfectly the images matched.  I didn't need to do any manual editing of the profile.  I was almost disappointed not to do the editing. I'm surprised, and pleased with the product.