It seems like you are experiencing some minor issues with the John Deere 5020 V1.2 mod for FS25. The fact that you mentioned that it rolls a bit and has some light errors suggests that there may be some issues with the physics or collision settings of the vehicle within the mod.
Regarding the rolling issue, it's great to hear that the V1.0.0.1 update fixed that problem. However, the fact that you're still experiencing some rolling suggests that there may be additional tweaks or adjustments needed to stabilize the vehicle even further.
For the light errors you mentioned, it could be related to scripting errors, texture problems, or other potential issues within the mod's files. If these errors do not affect the gameplay or functionality of the vehicle, it might not be a major concern. However, for a more polished and realistic experience, it's best to address these errors if possible.
If you're unable to figure out the exact cause of these issues, reaching out to the mod creator or the modding community for assistance is a great idea. They may have insights or suggestions on how to resolve the rolling and light error issues you are experiencing.
Overall, it's great to see that the mod is receiving updates and improvements, such as the addition of wear, the Leon blade, and Hiniker fenders. These enhancements can enhance the realism and functionality of the vehicle within the game. Keep exploring and experimenting with the mod, and hopefully, any remaining issues can be resolved to ensure a smooth and enjoyable gameplay experience.