Dimitrije, You've misunderstood me slightly. I've recommend -qu -bh, not -qh -bu. The first have more sense than the last and is much faster. Have You dithering enabled in Your workflow? Thu, 24 May 2012 08:33:44 +0200 от Dimitrije Zivkovic <migraf015@xxxxxxxxx>: Hi Nikoly Color space from device is too different from regular one. That's why I have to use -bh or -bu, and if I use -qh -bu the time for compute is too big, and I've got always massage for memory low or something. But that is not big problem. When I make CMYK profile, everything is ok, I mean with Argyll, but when I make any RGB profile I've got colored background. Before I use original program from X-rite (Munki) everything seems ok. So does anyone get similar results with RGB profile? Dimitrije Zivkovic On May 24, 2012, at 8:24 AM, Nikolay Pokhilchenko wrote: Hi Dimitrije Do You have the particular reason to compute high resolution backward table (-bh) having standard resolution of the forward table (-qm)? I didn't know wither it is the problem reason or not but... As I'm understanding the profile compute process, the backward table compute is performing on the forward table compute result. So, If You have normal resolution forward table, there is no sense to compute higher resolution backward table. As I've noticed, the computing of the forward table is much more faster than the backward one. So You can try "-qh" or even "-qu -bh" without very much computing time increase. Thu, 24 May 2012 07:36:24 +0200 от dimitrije zivkovic <migraf015@xxxxxxxxx>: Hi everybody I have problem with making RGB profile. I always get colored background, white is not white. I have the same problem on several printers. Command is always the same: "colprof -v -D"name" -qm -bh -cmt -dpp -ssRGB.icm -Oname" please advice Dimitrije Zivkovic