Unity Hierarchy Limits?

Unity Engine
1

Hey folks,

I’ve created a scene using an empty game object and two FBX files. I put the two contents of the two FBX files inside of the empty game object. If I delete 104 meshes from one of the FBX files everything seems to work fine, however when I delete the 105th mesh, the hierarchy disappears (the arrow next to the FBX in the hierarchy is gone so I can no longer see what is in it). There are at least 500 meshes in there (and the remaining meshes still appear in the Scene view, there just doesn’t seem to be a way to see them in the hiearchy).

I guess my question is, are there any known limits to adding and removing objects from the Unity hierarchy?

I tried this on two different machines and on one of them I was receiving an odd error in the Console: “row == -1”. Does that error make any sense to any one?

Thanks,
Jared

PS: I don’t really want to add the FBX and then delete all of the items; I’m creating a detailed hierarchy of objects so I take the FBX and move the models into different groups using empty game objects. This has the same effect where if I move the 105th object out of the FBX group, the hierarchy for that group disappears (so I can’t go in and move the 106th object to the location I want). It is easier to replicate the problem by simply deleting the objects from the initial FBX.

2

I used to get this error when generating large numbers of meshes at runtime. I believe it’s a bug in Unity.

3

This will be much easier to fix for the Unity guys if you use the Submit Bug application to submit the report to UTs bug tracking system.

Please make sure you include instructions on how to replicate your bug. Attaching a project folder or an exported unity package containing any assets helpful for demonstrating the issue.