Creating Bundle Asset - Can't build bundle Uncompressed - "expected id 'UnityRaw'"

I'm trying to create a bundle for a mod I'm updating. I've figured out how to create a bundle using the unity editor.

When I import the bundle into the game (at Runtime) I get the error

This AssetBundle was not created with UncompressedAssetBundle flag, expected id 'UnityRaw', got 'UnityFS'

In the C# Code I have

AssetBundle.CreateFromFile(filePath);

I use the BuildAssetBundles as the following:

namespace UnityEditor
{
public class CreateAssetBundle
{
[MenuItem("Tests/Create/Create From Asset Database")]
public static void CreateNewAssetBundleFromAssetDatabase()
{
string outputPath = "AssetBundles";
BuildPipeline.BuildAssetBundles(outputPath, BuildAssetBundleOptions.UncompressedAssetBundle | BuildAssetBundleOptions.ForceRebuildAssetBundle);
}
}

}

I've noticed one shader in the bundle does have an option to build & generate code but I don't think thats the issue. I'm very new to Unity and C# so its possible I've overlooked something.

I'm using Unity 5.3.5f1 - Personal

 

Did you try to rebuild the asset bundle with different flags? e.g: only with UncompressedAssetBundle ?

Also (seems silly) but are you sure you are loading the correct bundle ?

 

Ya that I made sure of. Believe me i am n00b enough to make that mistake; but i was able to change the contents of the file to get a different error