Invalid "osccal" value. How to fix microcontroller?
 

I've been screwing around with a PIC10F206 and some 74hct595 logic chips. I have 4 PIC10F206's, however 2 of them are giving me an 'invalid osccal value' error when I try to program them with my PICkit2. Apparently, according to the datasheet, the osccal value gets screwed up and there is a way to replace it. Does anyone know how this is done? thanks.