I use CorelDraw x5 and build designs using CMYK.
However when some are sent to print, grey shadow areas print out as a reddish grey, like Magenta has been used in part.
On B/W only docs I manage this by selecting Print in Greyscale in the print window and Print Using Xerox B/W in the Xerox print window.But sometimes I have docs which have a colour photo... and the photos is a bit reddish, and the bacl lines and shadows are definately red.
Thsi has occurred since I changed Computers, so I'm sure its a driver issue, and despite having been thoroughly though all options I can uncover, I'm at a loss....
Also, as I purchased the machine as opposed to leasing it I have no support contract and its £350 for a enginerr call out!!!
If you've already tried the win10 x64 drivers. Give the win 7 64 drivers a shot