Mma 10 and 11 can't read the file. http://www.risc.jku.at/research/combinat/software/ergosum/RISC/HolonomicFunc... says "Right now you are using Version 1.7.1 released on October 9, 2013. ..." How does it know? ("You are *here*.") "... This version is compatible with Mathematica versions from 5.2 to 9.0." I'd try an older Mma, but then V 11 tends to have major license snits requiring manual reactivation. Before I download and reinstall, is anybody else using Koutschan's package? --rwg