KJR 3.4.0 used to create part connections across Breaking Ground robotic parts, causing them to get stuck. The Breaking Ground robotics are basically worthless with KJR 3.4.0.
KJR 3.4.1 fixes that issue.
Reference: KSP-RO/Kerbal-Joint-Reinforcement-Continued#5

thanks, that explains why some people were complaining that Robotic failed to function after instal of KSPIE (package)

You forgot to close this.