What to do for, Missing data directory "ros2lib.sldd " when running "ModelAndC​ontrolAuto​nomousHaul​Truck.mlx " file from project "Offroad Navigation for Autonomous Haul Trucks

I dont kow much about this, was trying to run this on my system.

When i ran "ModelAndControlAutonomousHaulTruck.mlx" file, I got an error in simulink saying "Unable to find data dictionary 'ros2lib.sldd'. " .

😅 When I ran this my Matlab2025a crashed . Idk whats happening tho

Well I changed back to lower version 2024b. Im getting this error in 2024b, i got this error in 2025a in start when MATLAB worked well in my system.

So do any one know about solving this issue, i downloaded the zip file from "Offroad Navigation for Autonomous Haul Trucks - File Exchange - MATLAB Central" Ah do i have to do anything.

Please help me what to do for the required data directory

[dpb]

Requires MATLAB release R2024b or newer

• MATLAB®
• Simulink®
• Navigation Toolbox™
• Computer Vision Toolbox™
• Image Processing Toolbox™
• Automated Driving Toolbox™
• Stateflow®
• Robotics System Toolbox™ (Optional)
• Simulink 3D Animation™ (Optional)
• Model Predictive Control Toolbox™ (Optional)

The 'ros2lib.sldd' file would have been created by the Robotics System Toolbox it seems even though stated to be optional.

Not sure about what is included in academic license; perhaps one of the toolboxes isn't available or simply the project zip file didn't include what was intended to be an optional piece.

Answer 1

[Goutam]

Hi Lingampalli Venkata Subramanyam,

I tried reproducing the issue on my end using MATLAB R2025a and did not encounter any errors initially.

However, after uninstalling the optional toolboxes and running the same file again, I did receive errors similar to the one you mentioned. This suggests that the toolboxes labelled as "optional" in the information provided on the File Exchange link you shared are actually required for proper execution of the model.

To verify your setup, you can run the following command in the MATLAB command window:

ver

This will list all the toolboxes currently installed in your environment. Please ensure that all the mentioned toolboxes are present and try running the model again.

Hope this helps

Best regards,

Goutam

[L]

Hi Goutam,

Thanks for trying to solve problem,

Well, I installed all optional toolboxes, yet i got that error. So i just downgraded the version of MATLAB, then i did the same, it worked! So its working now i guess. I installed ROS toolbox as well in here. Then it worked for me. I found the missing file which was shown during simulating time in that tool box, which was not included.

Regards,

L V Subramanyam