First off I would never trust PSCS3, it had some kind of half baked CM (for use with Apples OS at the time) when printing and I don't think works correctly with the newer OS's.
>"I have installed your Xml file and have the following question: when I go to print with the Adobe utility, the "color matching" dialog is greyed out and the colorsync is selected. Additionally, under the "main" dialog, the Color setting is greyed out but is does read "no color correction".
This is the correct way it should work except when printer managed color is selected.
>"When installing your xml file, I restarted the computer. Do I need to delete and re-add the printer to ensure it uses the latest version of the Xml file?"
No need to restart the computer. Do not delete and re-add the printer, as it will install the old Xml file.
>"Does this mean that I am actually getting no color correction? or is the greyed out "colorsync" setting still messing things up?"
Again with applications that use Apple's new printing path, when you choose application manages color, under Color MAtching, Colorsync will be selected as default and grayed out. Under Main/Color Mode: when the application is listed in the AppColorMatchingInfo.xml, Color Mode: with be defaulted to No color correction (no CM applied in the driver) If the application is NOT listed in the AppColorMatchingInfo.xml, Color Mode: with be defaulted to Color (CM will be applied in the driver).
>"I tried printing the same target with PS/CS3 and it failed the I1 profiler reading cycle. I printed the target through CS3 with "printer manages colors" selected and "no color correction" selected in the 2.62 driver. So I think something is still going on behind the scenes to do unwanted color management. FYI, I already have my I1Profiler set to .5 for wider latitude reading patches with glossy papers per X-Rite tech support."
You need to ditch PSCS3 unless you want run the OS that was current when CS3 was released.
>"Thanks for your help with this. I am quite disappointed in Canon Tech Support and X-Rite this time around. They both seem to be more interested in passing the buck rather than helping me solve the problem."
I don't have a problem with X-Rite or i1Profiler. Canon on the other hand needs to deal with this special cases file. But it was a better approach than what Epson did until they seemingly got there act together. Canon need to have all there tech support aware of this. I have reminded them numerous times, almost every time a new app is released or updated.
As long as you have my AppColorMatchingInfo.xml file (the current posted one) you should be able to print correct profiling targets from i1Profiler 1.2 and the Adobe Color Printing Utility.
I have my doubts about printed anything correct from PSCS3 and 10.6.8. Correct targets, no way. Correct prints maybe if you convert to your printer profile in PS and then choose Printer Manages Color, Color Matching: Vendor Matching, Main/Color Mode: No color correction, if you're lucky. CS3 10.0 is listed in the AppColorMatchingInfo.xml file so if it is coded correctly for Apple's new printing path it might work, (the setting appear correct) but I would not bet on it as I recall PSCS3 was a real problem. There may also be a difference in 10.0.1.
Now having explained all this, I am wondering why you are not using Canon's Plugin to print from CS3 to your iPF5100?