Anyone planning to use the 18F67J60 family of chips needs to study the datasheet as there are several things that are different from the PICs I've used before.

There are no clamping diodes on the inputs so you need to pay attention to max limits which are not the same for all pins.

Some pins sink/source 25mA, others only 8mA, still others only 2mA.

It's a 3.3V device and while some pins are 5V tolerant, others are not. Any other chips used in a design need to operate at 3.3V or may need level translation.