How to make texture readable for assetbundle

I want read pixels from texture which set to read/write enable. But I got non-readable exception. My texture is the skin of character which package to assetbundle. I knew make texture readable will increase memory.

I have try such solutions:

  1. Instantiating Texture2D Object get non-readable error about AssetBundle - Questions & Answers - Unity Discussions

  2. /Unity/Editor/Data/Documentation/html/en/ScriptReference/BuildPipeline.BuildAssetBundle.html

But failed, is there any solution? Thank you very much for your suggestion.

Maktech(http://answers.unity3d.com/questions/1148901/saving-textures-as-readable-in-assetbundles.html) have encounter similar problem.

hahaha, solution 1 workable!!!

I clean cache in C:\Users\peter\AppData\LocalLow\Unity\WebPlayer\Cache, read pixels succesfully!!!