The program is unable to copy reduction structure objects from the specified reduction structure file.
The possible causes are that the object in question does not exist in the reduction file specified (either using TUNE_CLONE or the '<' indirection operator in echmenu), or that the object is dimensioned differently from the corresponding object in the primary reduction structure file. Objects can only be copied when their dimensionalities are identical (i.e., they have the same number of X-pixels, number of orders etc.)
To check the dimensions of the object you are trying to clone from, use the hdstrace command and the object path as reported by the program. If the only dimensions which differ are controlled by TUNE_??? parameters, then you may adjust the relevant parameter to allow the object to be successfully copied (Note that this in turn may necessitate re-running parts of the reduction to re-generate other objects also dimensioned using the same TUNE_??? parameter).
Martin Clayton