Rotary Encoder on 20x4 LCD with pushbutton digit select and other features

[csantex]

I have the identical rotary encoder module and use no caps at all on it,
I have used a pic18f458 @8mhz , a pic18f25k22 @64mhz they both work perfectly.
I don't have a pic16 chip with the correct pinout to suit the lcd wiring in my easypic7 board so I can't test for those chips
but can see no reason for it not to work.

If your using 18F chips then that may be the reason why. Perhaps the commands are getting compiled differently for 18F's than for 16F's??
No matter, I have an 18F4423 I can use to test that theory...
Thanks.