Hi again, I tryed to install Ptolemy on my PC operating with Linux RedHat 6.0 . I got the RPM packages for the RedHat 6.0, and installed the soft by using the gnorpm utility. The ptolemy-bin-0.7.1p1-10.i386.rpm package worked OK, but for the ptolemy-source-0.7.1p1-10.i386.rpm package, I got a segmentation fault. How can I correctly install Ptolemy on my system ??? Regards, Michel Schuster Alcatel Business Machines E-mail : [EMAIL PROTECTED]