Hmm, my post isn't very clear.

I have the software working on a development board. This board uses a 10Mhz Xtal osc as standard.

The board I want to use it on uses an external 10Mhz oscillator source on one pin only OSC1.

I believe I need to set OSCCON=8 to select mode 8 in the oscillator settings. It appears my programmer is defaulting to the 'inc' values.