Hi Andy)
it's chaos from Chaos Vray for Su forum,here i have a different nick...i have solved this problem,it's strange,when i was hiding glass material,i could see my landscape image,but the problem was not in glass component or glass material, the problem was that landscape image was layered on back face of arc surface,it wasn't facing out,when i paint my image on front face - everything is get okay)))))just 6-7 hours of wondering,trying, asking were spent,but now i know where the source of that was