design examples, qsys and base addresses

Im working through a web server design example. It has an iniche stack. I rebuild the qsys to reflect the newer quartus version changes. i made no other changes, but i did update the base addresses prior to generation.

It compiled fine and loaded into Nios fine. But when i ran it, the iniche stack did not start. iniche_net_ready never goes true.

I tried a few things to get it working, but eventually just started fresh with a new copy example again. This time, I did not update the base addresses.

I ran it and the iniche stack came up and functioned as normal.

I experimented and updated the base addresses again... didnt work. new copy, works fine.

So whats the deal with updating the base addresses?

I would think that updating the addresses would be reflected in the system.h file and that i wouldnt have this non-functional issue, but i must be missing something.

Any ideas why updating the base addresses might cause the iniche not to start?

thanks