Try with XINST off and LVP off.

Code:
@ __CONFIG _CONFIG1L, _PLLDIV_2_1L & _CPUDIV_OSC1_PLL2_1L & _USBDIV_2_1L
@ __CONFIG _CONFIG1H, _FOSC_INTOSCIO_EC_1H & _FCMEN_ON_1H & _IESO_ON_1H
@ __CONFIG _CONFIG2L, _PWRT_ON_2L & _BOR_ON_2L & _BORV_3_2L & _VREGEN_OFF_2L
@ __CONFIG _CONFIG2H, _WDT_ON_2H & _WDTPS_256_2H
@ __CONFIG _CONFIG3H, _MCLRE_OFF_3H & _PBADEN_OFF_3H
@ __CONFIG _CONFIG4L, _STVREN_ON_4L & _LVP_OFF_4L &  _ICPRT_OFF_4L & _XINST_OFF_4L & _DEBUG_OFF_4L

Define  OSC     8                        ' Set clock speed

OSCCON = %01110000