Vicky Higman Higman wrote: > I find something similar - it seems always to affect the last dimension in > the Re-refrence to peak dialogue and causes a traceback. > I'll enter it on the bug tracking system ( > http://sourceforge.net/tracker/?group_id=120914&atid=688631). Yes, it seems to be the last dimension. I had the same problem with referencing the proton dimension between a CH and a NH correlation spectra. Couldn't set the nitrogen dimension to be constant. regards Marco -- Dipl. Chem. Marco Röben Leibniz-Institut für Molekulare Pharmakologie (FMP) dep.: Solution NMR Robert-Rössle-Str. 10 D-13125 Berlin +49-30-94793224 (phone) +49-030-94793169 (fax)