On 11/07/2015 01:02, xaravich ivan wrote: > Hi everyone > I am using SMILES to build this Fluopropyl group and SMILES would > always give me this error, after I put the correct string. > The image and string I built and the error image is attached. > > Am I missing something? > For the record, the problem occurred because you were running coot in a directory in which it was unable to write files and directories. (This is not recommended.) Paul.