Using external programmer, PIC 16f88 programs without problem the first 
time. After that, programming errors crop up and the device seems to not be 
able to be reprogrammed.

I noticed the user had !MCLR set as I/O and was using the internal 
oscillator. I vaguely recall something reading somewhere about this causing 
the problem. I got a few google hits searching on MCLR and 16f88, but 
looking for more explanation. I haven't been able to find anything on the 
Microchip site.

Thanks for your time.

Richard
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