Long config line

[skimask]

It won't work the way you want it to work... Not all of those CONFIG options are location in CONFIG1, some are located CONFIG2L, CONFIG2H, and so on and so on...
And since I'm not 100% sure which PIC you're using, I can't tell you which option goes where.
This is one of my old config setups for a PIC18F4620.

@ __CONFIG    _CONFIG1H, _OSC_HSPLL_1H & _FCMEN_ON_1H & _IESO_ON_1H
	;_HSC_1H=HS, HSPLL_1H=PLL	'4xPLL on, failsafe/switch-over on
@ __CONFIG    _CONFIG2L, _PWRT_ON_2L & _BOREN_OFF_2L & _BORV_3_2L
	;powerup timer on, brown out off
@ __CONFIG    _CONFIG2H, _WDT_OFF_2H & _WDTPS_32768_2H
	;'wdt off
@ __CONFIG    _CONFIG3H, _MCLRE_OFF_3H & _LPT1OSC_OFF_3H & _PBADEN_OFF_3H & _CCP2MX_PORTC_3H
	;mclr is i/o, t1osc off, porta digital
@ __CONFIG    _CONFIG4L, _STVREN_OFF_4L & _LVP_OFF_4L & _XINST_OFF_4L & _DEBUG_OFF_4L
	;stack overflow , lvp off, xinst off, debug off
@ __CONFIG    _CONFIG5L, _CP0_OFF_5L & _CP1_OFF_5L & _CP2_OFF_5L & _CP3_OFF_5L
	;all code protection, eeprom write protection off
@ __CONFIG    _CONFIG5H, _CPB_OFF_5H & _CPD_OFF_5H
@ __CONFIG    _CONFIG6L, _WRT0_OFF_6L & _WRT1_OFF_6L & _WRT2_OFF_6L & _WRT3_OFF_6L
@ __CONFIG    _CONFIG6H, _WRTB_OFF_6H & _WRTC_OFF_6H & _WRTD_OFF_6H
@ __CONFIG    _CONFIG7L, _EBTR0_OFF_7L & _EBTR1_OFF_7L & _EBTR2_OFF_7L & _EBTR3_OFF_7L
@ __CONFIG    _CONFIG7H, _EBTRB_OFF_7H

EDIT: Just noticed the 'Overwriting.....(2007) error... So, yes, it is a 16F... Kinda hard to get that error with an 18F...