I'm really puzzled now! You've said you had made a filter already - that is the editor.
Right click on the thumb or add to the queue, right click on the image on the page preview and choose batch filter.
The terminology for Qimage Ultimate is now image editor, it used to be create filter, it's the same thing. The editor makes a non-destructive filter to edit the image.

Any more thoughts about letting me play with your image, I sent you an e-mail. We could then solve this very quickly I'm sure.
Terry

Thank you Gian,
I have been in contact with Terry as we usually do when trying to help.... he sent your image ti me.. I get the same numbers that Terry gets.
If you are using Epson Paper and Epson ink and an Epson profile (the correct one for the paper and printer),
You should not get a magenta cast.
If you do, try a head alignment run using the utility in teh driver, and then another cleaning cycle.
My printer has the flu, and Terry is making the test print, same printer that you have.

Best
Fred

I think Gian used a different program to pull out the RGB values, so that might explain the different pixel values

I strongly recommend that you also do this with the monitor profile turned off. That way you get the true values for the image and not altered by the monitor profile.
Terry

Just curious! How was the monitor profile made?
I think I saw it listed in Job Properties in Qimage, so Qimage should be utilizing it.

Fred

I just Googled Ubuntu Color Managment, looks tricky. 
A question that needs to be answered (i can't): is colour management and the use of a monitor profile active in Ubuntu and/or is it active in XP in your virtual PC? Is the monitor profile activated on PC start-up and working with video card to make the adjustments from the profile look-up table?
It could be Colour Management is not working at all in the virtual PC.
Terry

Fred,

of course the monitor has nothing to do with the printer, but the calibration - as I understood - is the way to go to TALK the same colours with the print service.

I might be happy of my prints even if they are wrong, but if I want THEM to print the same colours as me, we must start with what we see on the screen.

I agree that something must be wrong with the printer, and probably I should invest in new inks even if they are not empty, but still, when I'll have a printer reset to factory defaults, I must find a way to tweak Q-Pro to obtain the colours I want, and have them printed by the lab.

That is the Filter preview window. The slider splits the window so the filtered (= adjusted) image is shown to the right of the slider and un-filtered to the left.
Having the split helps you to see the difference the filter makes - not always easy! It is helpful to increase the magnification sometimes and choose a suitable area of the image to see the differences. Right click on the image in the editor to select an area and open the preview.
The Blemish/Redeye feature is activated in the preview window it is not related to the slider which should be over to the left when being used.

From what I can see there is nothing wrong with your image, it prints fine here and from what you say the prints you make are ok. too.
I think we may have misunderstood; it's the Print Service prints that are wrong, not yours - have I got that right?
If that is the case, it's the Print Service problem and their colour management. Maybe they can't handle images that are Adobe RGB and assume all is sRGB? Are they a "high street" service or a professional lab?

One other point, if you are modifying and image with a filter for the print service to use, you'll have to save-as ...  from the editor to incorporate the filter adjustments. You can convert to sRGB there too.

Terry