debug issue?

[ScaleRobotics]

I am not sure if it defaults to on, so it may not help. But to compare your config settings to default, you have not turned your:

__CONFIG    _CONFIG1H, _OSC_HS_1H & _FCMEN_OFF_1H & _IESO_OFF_1H
__CONFIG    _CONFIG2H, _WDT_ON_2H & _WDTPS_512_2H
__CONFIG    _CONFIG3H, _PBADEN_OFF_3H & _LPT1OSC_OFF_3H & _MCLRE_ON_3H
__CONFIG    _CONFIG4L,  _STVREN_ON_4L & _LVP_OFF_4L & _BBSIZ_1024_4L & _XINST_OFF_4L

MeLabs turns it off for all devices.

[Brian]

Thank you! Thank you!

What does that exactly do?
I read the fuse description but don't know for sure why it worked.

[ScaleRobotics]

What does that exactly do?

Good question! I know it turns off an extended assembly instruction set that PBP can't use. But why it makes the chip work erratically, I don't know.