Skip to main content

Troubleshooting RapidPath


RapidPath: Unexpected Error (Exception raised in synchronous message handler) / Motion: no axis mapped
No drive/motor nodes found on the EtherCAT network!

Either of these errors indicates that there were no nodes on the EtherCAT network that RMP believes are an axis.

  1. Confirm that the network in started.
  2. Confirm that there are nodes on the network.
  3. Confirm that the nodes are axes (each should have at least one Axis object underneath it).

"An unexpected error has occurred in RapidSetup"
"Object reference not set to an instance of an object."

This has happened when upgrading RMP from v8 to v10.


Resolution: Install the Visual C++ 2015-2022 Runtime.

Generally Instability

RMPNetwork.rta, RMP.rta Crashing

Instability outside of RapidPath/Mach is sometimes the result of INtime misconfiguration, version mismatches, or other things.

  1. for iBase controls
    1. AMD Ryzen Mobile V1605B
      1. There should be 4 logical cores (or 3, if one is already assigned to INtime), not 8 (or 7).
        1. Fixing this requires updating the BIOS.


Node A will not start.
INtime Distribution license: full license - invalid"

The only thing that usually prevents the INtime node from starting is being unlicensed.

Newer versions of RMP require that we use a USB hardlock for the INtime licensing scheme. This allows RMP to use the same unique identifier for licensing as the hardlock.

  1. Verify that the USB hardlock is present and has a driver.
    1. (Windows Device Manager) Look for "SafeNet USB SuperPro/UltraPro" under "USB Devices"
    2. See Troubleshooting USB Devices for more detailed troubleshooting steps.
  2. Verify that INtime is licensed.
    1. (INtime Configuration / License Manager)
    2. See Licensing INtime for more details.