picpgm programmmer
Perhaps we are wasting time with these non standard programmers.
You may better settle with Pickit2 ot a clone.
Your time would be saved and you could concentrate on development of software.
BTW, please ensure that there is no crystal or caps on the PIC under program
Also, be sure that there is no other load on RB6, RB7 RB3(5) that are used for programming.
total capacitors across power line could be tter be removed for the time of programming , to be introduced later.