Material does not exist.

[srd]

I'm using 2.1 and trying to display Cube_d.mesh and after loading the following resources, but don't understand why the DebugCube material does not exist. It's in DebugPack.zip which is in the addResourceLocation(...). And it's loaded as shown below. I'm not too worried about the older format warning as that one I understand.

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Added resource location '/home/srd/ogre-v2-1/Samples/Media' of type 'FileSystem' to resource group 'General'                                          
Added resource location '/home/srd/ogre-v2-1/Samples/Media/packs/DebugPack.zip' of type 'Zip' to resource group 'General'                             
Mesh: Loading Cube_d.mesh.                                                     
WARNING: Cube_d.mesh is an older format ([MeshSerializer_v2.1 R1]); you should upgrade it as soon as possible using the OgreMeshTool tool.                     
Can't assign material DebugCube because this Material does not exist. Have you forgotten to define it in a .material script?

My calls look like:

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    Ogre::ResourceGroupManager::getSingleton().addResourceLocation(
       "/home/srd/ogre-v2-1/Samples/Media", "FileSystem",
            Ogre::ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME);
            
    Ogre::ResourceGroupManager::getSingleton().addResourceLocation(
       "/home/srd/ogre-v2-1/Samples/Media/packs/DebugPack.zip", 
            "Zip",  Ogre::ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME);
             
    Ogre::Item* item = sceneManager->createItem("Cube_d.mesh",
 Ogre::ResourceGroupManager::AUTODETECT_RESOURCE_GROUP_NAME,
                Ogre::SCENE_DYNAMIC);

[dark_sylinc]

You must initialize the resources first.

i.e. you're missing the call to:

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Ogre::ResourceGroupManager::getSingleton().initialiseAllResourceGroups( true );

Which has to happen after you've added all the resource locations you want to load