Sneaky-geek,

Thank you for pointing out the inconsistency in the TRISC. It didn't affect the program as I had written it, but I should have corrected that when I changed it. It now reads:

Code:
TRISC = %11110000		' Make port C pins 0-3 outputs and the rest inputs
Yes, I agree, most problems in embedded projects are self-inflicted, although never intentional. Having another pair of eyes to look at the problem has always helped me.

Aratti,

Thank you! I doubled-checked the pinouts from the Maxim datasheet this morning but I can't believe I goofed on the Iset resistor to Vcc. Ugh! That fixed my problem. I did add a 10k resistor to MCLR to Vcc when I moved everything to the second breadboard, but forgot to update the schematic. Thank you for looking that over.

Thank you both immensely for your advice and suggestions!!!