robert@xxxxxxxxxxxxxxxxxx wrote: > The ti3 file has as target instrument "X-Rite i1 Pro 2", whereas the ti2 > file has as target instrument "GretagMacbeth i1 Pro". If the ti3 file is > changed, colprof then runs OK. Hi, You're right - there is some inconsistency there. I think you will find that it also works if you change it to "Xrite i1 Pro 2". I'll fix it in the next release. Graeme Gill.