1. I had the same question for Roy recently. He explained that there are many places for the version #, and he didn't update them all. This is what he told me:
"There are so many places that have a version number. I don't usually go through them all just for number changes i.e. I update only the things that are actually changed.
You can see "2.7.4" a couple places -- in SysPrefs>Print&Scan shows the driver # under "Kind". Also in Page Setup --> under the format for selection. There doesn't seem to be a universal place to show this."
2. I just noticed 2.7.5 today. From the release notes, it looks like it's mainly a paper feed update. I don't see any reason not to update, though haven't used this version yet myself.
3.Yes, I believe that's the only Baryta paper Canson makes. Some glossy curves are named a bit different, because they were all originally custom curves made for customers over the years, and curves were names however they labeled the targets.
4. In the QTR window, I don't believe the Matte/Gloss paper setting makes any difference. For black ink, you can just select -installed- to use the black ink your printer is currently set for. If your printer is in MK mode for example, and you have Photo Black selected in the QTR window, it will do a black ink change before printing. I'm not completely sure about the media setting on the printer, and have always left ours on the same setting, then selected different media settings in the print driver (when printing color), or just selected the paper curve when printing thru QTR.
5. When printing on any type of gloss, semi-gloss, baryta, satin, pearl, etc... papers, you want your printer in Photo Black mode. For any non-gloss papers such as matte, rag, uncoated, Japanese, etc... the printer should be in Matte Black mode.
6. Hmmm... I wonder if a piece of paper paper towel got stuck on the print head, or if fibers from the paper towel got lodged in the LC print head nozzles. If it was my printer, I would try carefully manually cleaning the wiper blade, capping stations, flushing box and bottom of the print head by following our cleaning procedures, which can be found here: http://www.inkjetmall.com/tech/content.php?133-Printer-Cleaning-and-Preventative-Maintenance. After manually cleaning, do 1-2 regular cleaning cycles before printing a nozzle check, and if it's not significantly better, try one power clean cycle. If you are unable to get the LC channel printing well again after cleaning, then yes- we can make you some customized curves to move the shade 3 ink to one of the unused channels.
I hope this helps. Please keep me posted, and let me know if you have questions or there's anything else I can help you with.
Best regards~ Dana