I downloaded the latest calibre from the Mentor Graphics site. It came as an executable file, which I ran. This basically just extracted the files to the directory that I specified, which was /sw/mgc. I then changed to the /sw/mgc/ixl_cal_2006.2_16.16/bin directory and tried to run calibre. It gave me this error message:

ERROR: Invalid Calibre software tree: /sw/mgc/2005BST/MGC_HOME.ixl

That directory is what I had set as MGC_HOME. After I changed MGC_HOME to /sw/mgc/ixl_cal_2006.2_16.16, I could run calibre with ./calibre -gui

This is going to present a problem as I’ll have to change MGC_HOME based on which programs I want to run. I might have to write scripts that users can use to properly set up their environment before running certain programs.