Joakim helped me this. His advice was that the RPTSOL keyword needs to be moved to the SOLUTION section (not the SCHEDULE section). Markus -- Dr. Markus Blatt - HPC-Simulation-Software & Services http://www.dr-blatt.de Hans-Bunte-Str. 8-10, 69123 Heidelberg, Germany, USt-Id: DE279960836 Tel.: +49 (0) 160 97590858