Try to add the path to your libF77.so.1 to your LD_LIBRARY_PATH. Hope this helpful. +++++++++++++++++++++++++++++++++++++++++++++++++++++ Minjiao Lu, Ph.D., Research Associate Dept. of Civil Eng., Nagaoka Univ. of Tech. Tel: 81+258-46-6000 Fax: 81+258-47-0019 E-mail: lu at bousai.cvl.nagaokaut.ac.jp +++++++++++++++++++++++++++++++++++++++++++++++++++++