Versions of Hijack prior to v459 may not include the "complete" fix for this, so ensure you're using the latest (v464 right now).

With Hijack >= v459, the fix is automatic. If the cs4231a is dead, Hijack will notice and automatically try to work around the fault. This may or may not succeed, depending on the actual state of the dead chip.

It usually works, but once in a while the dead chip (1) may be driving some pins regardless, preventing use of the peripheral bus, or (2) might be the ethernet chip instead of the cs4231a.

Cheers