Hi! bc_grpopts is missing to broadcast bOPT and bTS. Casuing yet another segfault. Gromacs version 4.0.5 -- Ake Sandgren, HPC2N, Umea University, S-90187 Umea, Sweden Internet: ake at hpc2n.umu.se Phone: +46 90 7866134 Fax: +46 90 7866126 Mobile: +46 70 7716134 WWW: http://www.hpc2n.umu.se