Why do I get an IBIS model loading error when using Hyperlynx version 7.5 software from Mentor Graphics to view Stratix III device IBIS models?

Description

You will get an IBIS model loading error when using Hyperlynx version 7.5 to open the Stratix® III device family IBIS models.  The Stratix III device IBIS models were generated using IBIS version 4.1 which is not compatible with Hyperlynx version 7.5.  You will need to use Hyperlynx version 7.7 or newer to open the Stratix III IBIS models.