I've just started getting this error too. I am using the MeLabs serial programmer on a 16F628A in circuit (which has a 0.1uF cap).

Odd, I can program a 18F2550 on the same circuit over and over again without any problem.

I have Erase Before Programming but I keep getting the same 0000 error. I must have tried at least 20 times just now.

I'll try soldering PGC/PGD real close to the PIC and see if the length of the leads (along with trace length) is at fault.

Robert
:shrug: