I've installed the NI-488.2 drivers on my TiBook 500 running OS X 10.2.3. The GPIB ENET/100 device is working fine from other computers. EthernetConfig sees the ENET/100 device just fine, but when I enter its IP address using Explore GPIB, it says the interface has been added, but the list is still empty.
After quitting GPIB Explorer, I see a file called ini$$0.TMP in the NI-488.2 directory. It is a text file with what looks like configuration info. So my guess is it can't write the info where it wants to, due to a permission problem. But it gives no error message at all, just doesn't work.