Hello Wayne, Thanks a lot for you quick answer. But somehow it still does not work. I get always the following error message: KeyError: 'Identifier for dimension w1' Do you have any idea what this could mean?? Thanks, Marielle The whole text: Model read finished. Duration 0.745584964752 Model validity check skipped Traceback (most recent call last): File "/Applications/ccpnmr/ccpnmr2.2/python/ccp/format/spectra/params/XeasyData.py", line 127, in <module> convertXeasyToAzara(xeasyParamFile, azaraDataFile, azaraParFile) File "/Applications/ccpnmr/ccpnmr2.2/python/ccp/format/spectra/params/XeasyData.py", line 89, in convertXeasyToAzara xeasyParams = XeasyParams(xeasyParamFile) File "/Applications/ccpnmr/ccpnmr2.2/python/ccp/format/spectra/params/XeasyParams.py", line 73, in __init__ ExternalParams.__init__(self, **kw) File "/Applications/ccpnmr/ccpnmr2.2/python/ccp/format/spectra/params/ExternalParams.py", line 103, in __init__ self.makeNewParams() File "/Applications/ccpnmr/ccpnmr2.2/python/ccp/format/spectra/params/ExternalParams.py", line 170, in makeNewParams self.parseFile() File "/Applications/ccpnmr/ccpnmr2.2/python/ccp/format/spectra/params/XeasyParams.py", line 116, in parseFile nuc = dd[XeasyParamDict['nuc']+ss] KeyError: 'Identifier for dimension w1'