[jpstewart]

Following up on what I wrote the other day:

It is inventor_eoe.sw64.lib that needs to be installed from the IRIX installation CDs.  You'll likely need both the base package (which I think is on the "Foundation 2" CD), and the appropriate overlay CD for whatever version of IRIX you're running (probably 6.5.30 but I haven't followed the thread that closely).  Then you can use "swmgr" (GUI) or "inst" (command line) to install just the missing pieces.  

If you need more detailed instructions on how to use those tools, let us know.