[Bug?] "Assertion failed on expression: 'm_GpuProgram'" when accessing mainTexture

Unity Engine
1

Hi, I’m trying to upgrade our loading system to be based on addressables, but I’ve ran in a little issue.

I’m loading prefabs from a scriptable object that is an addressable, and then call an init function using data from this prefab before instantiating it (Loading a skeleton from Spine actually).

When I’m loading directly the prefab all goes well, but upon switching to Addressable I get the following error when trying to access a material referenced by the prefab :

Assertion failed on expression: 'm_GpuProgram'
UnityEngine.Material:get_mainTexture()

While the calling code is roughly :

if (material.mainTexture == null)
{
    //do stuff
}

Note that this assert doesn’t seem to impact anything, besides my unit tests. Is there something I’m missing in my setup of addressable?

I’m trying to get a simpler repro case but simplifying it makes me currently get a null ref on the access to the material even though it’s not null in the prefab…

2

I’m having something like this.

When I instantiate prefab that is stored in a assetBundle I get:

Assertion failed on expression: 'm_GpuProgram'
UnityEngine.Material:get_mainTexture()

Calling like this:

var prefab = myLoadedBundle.LoadAsset(assetName);
var go = Instantiate(prefab) as GameObject;
3

This ended up being a problem with the bundle being built for the wrong platform that it was running on.