Canon Image Prograf print plug-in for photoshop

I can see no reason why i1 profiler would not print an accurate test chart, its not about appearance here but accuracy.

you wrote:

  "When I save the i1Profiler test chart as a TIFF and then print it with the Prograf print plug-in with no color correction set I get a perfect printout with which I can create a very good profile"

are you successfully printing with that profile? you write that 

 "I can create a very good profile"

 If you can make a nice accurate print then you're OK I think?

you might like to download and test this image: 

please go here and download the Adobe RGB test image: https://www.colourmanagement.net/index.php/downloads_listing/

Also I would set i1 profiler to make a V2 profile, V4 profiles aren't widely accepted by software - and seem to offer no advantages, maybe they will one day 

set options to " Advanced" and you'll see this as an option - when building a profile:

I don't understand this question:
OK to continue using the OS standard CMM as-is?

is that part of the Canon software's error message below? 

you wrote:

 "I get the following message: The selected profile is an ICCv4 profile. OK to continue using the OS standard CMM as-is?

I hope this helps
neil barstow, colourmanagement net :: adobe forum volunteer:: co-author: 'getting colour right'
google me "neil barstow colourmanagement" for lots of free articles on colour management