My best guess would be a grounding issue. Evidently you are powering the PIC independent from the PC. When the PicKit is connected it changes the potential on the zero rail (ground).
My best guess would be a grounding issue. Evidently you are powering the PIC independent from the PC. When the PicKit is connected it changes the potential on the zero rail (ground).
Dave
Always wear safety glasses while programming.
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