Hi,
use Microchip C18, it's more stable than HI-Tech's C
and it supports 4331 too.
I don't want to push MCC18, but in my last project i got
insane because of HT's code, it froze many times, i spent
hundreds of hours debugging what's wrong but it was the compiler
(at least i think). So i moved to MCC, it's better (i know it has bugs
too, but i did not run into them yet), I made the decision, turned
the sources to MCC format (it's not a big deal) and now it's running fine.
Zed