Probably ignore that last message. It looks as if the project had somehow got messed up in 1.0.b14 since if I switch back to 1.0.b14 I get the following. Dunno how that happened - any clues as to how to fix it would be welcome. Brian >>> last xml element read: <StdChemComp _ID="_1" code1Letter="R" molType="protein" ccpCode="ARG" code3Letter="ARG" cifCode="ARG" stdChemCompCode="ARG" merckCode="12,817"> parser state was: reading ERROR loading xml ccp.ChemComp protein/ARG.xml last xml element read: </_StorageUnit> parser state was: checking object validity ERROR loading xml ccp.Molecule ccp/Molecule.xml Error dereferencing link to Molecule from key: ['LM_ICP'] Error dereferencing molecule for object ccp.MolSystem.Chain with key : ['LM_ICPsystem', ' '] last xml element read: </_StorageUnit> parser state was: setting links and multiattributes ERROR loading xml ccp.MolSystem ccp/MolSystem.xml Error dereferencing link to Atom. key was: ['LM_ICPsystem', ' ', 2, 'CA'] Error dereferencing atoms for object ccp.Nmr.AtomSet with key : [1] last xml element read: </_StorageUnit> parser state was: setting links and multiattributes ERROR loading xml ccp.Nmr ccp/Nmr.xml -- Dr. Brian O. Smith ---------------------- B.Smith at bio.gla.ac.uk Division of Biochemistry & Molecular Biology, Institute Biomedical & Life Sciences, Joseph Black Building, University of Glasgow, Glasgow G12 8QQ, UK. Tel: 0141 330 5167/6459 Fax: 0141 330 8640