I'm working my way around a new PIC, the 18F13K22 at a smokin' 64 MHz using the internal osc and PLL. Finally got that working but for the life of me, I can't get pin 7 (RC3) to toggle. The following code toggles pin 8 (RC4) but not pin 7:

Code:
#config    CONFIG FOSC = IRC        ;Internal RC oscillator
    CONFIG PLLEN = ON        ;Oscillator multiplied by 4
    CONFIG IESO = OFF        ;Oscillator Switchover mode disabled
    CONFIG BOREN = OFF        ;Brown-out Reset disabled in hardware and software
    CONFIG WDTEN = OFF        ;WDT is controlled by SWDTEN bit of the WDTCON register
    CONFIG WDTPS = 32768        ;1:32768
    CONFIG MCLRE = ON        ;MCLR pin enabled, RA3 input pin disabled
    CONFIG XINST = ON        ;Instruction set extension and Indexed Addressing mode enabled
#ENDCONFIG

DEFINE OSC 64

ANSEL = 0
ANSELH = 0

LATC  = %11000100
TRISC = %00000000
LATB  = %01000000
TRISB = %00110000
LATA  = %00000000
TRISA = %00000111

'Set internal osc to 16 MHz, PLL enabled
OSCCON.6 = 1
OSCCON.5 = 1
OSCCON.4 = 1
OSCTUNE.6 = %1

pause 500

Main:
    LATC.4 = 1
    LATC.3 = 1
    pause 500
    LATC.4 = 0
    LATC.3 = 0
    pause 500
goto Main
Am I missing something silly and obvious?

Best Regards,
Paul