Hi Stuart, > This appears to be occurring with my Thr HG1/Cg2. Just to clarify, do you mean HG2? The HG1 should only be present if the oxygen OG1 is protonated and not exchanging very fast - relatively unusual. In any case, if you could send me an example of the lines in the XEASY file, and what you expect to come out based on the CCPN project, I'll look into it. Bye, Wim