NGUIでのScrollViewのカスタムshaderの使用には役に立たないソリューションについて

NGUIのUIdrawCall.csにはこのようなコードがあります

void CreateMaterial ()
	{
		mTextureClip = false;
		mLegacyShader = false;
		mClipCount = panel.clipCount;

		string shaderName = (mShader != null) ? mShader.name :
			((mMaterial != null) ? mMaterial.shader.name : "Unlit/Transparent Colored");

		// Figure out the normal shader's name
		shaderName = shaderName.Replace("GUI/Text Shader", "Unlit/Text");

		if (shaderName.Length > 2)
		{
			if (shaderName[shaderName.Length - 2] == ' ')
			{
				int index = shaderName[shaderName.Length - 1];
				if (index > '0' && index <= '9') shaderName = shaderName.Substring(0, shaderName.Length - 2);
			}
		}

		if (shaderName.StartsWith("Hidden/"))
			shaderName = shaderName.Substring(7);

		// Legacy functionality
		const string soft = " (SoftClip)";
		shaderName = shaderName.Replace(soft, "");

		const string textureClip = " (TextureClip)";
		shaderName = shaderName.Replace(textureClip, "");

		if (panel.clipping == Clipping.TextureMask)
		{
			mTextureClip = true;
			shader = Shader.Find("Hidden/" + shaderName + textureClip);
		}
		else if (mClipCount != 0)
		{
			shader = Shader.Find("Hidden/" + shaderName + " " + mClipCount);
			if (shader == null) shader = Shader.Find(shaderName + " " + mClipCount);

			// Legacy functionality
			if (shader == null && mClipCount == 1)
			{
				mLegacyShader = true;
				shader = Shader.Find(shaderName + soft);
			}
		}
		else shader = Shader.Find(shaderName);

		// Always fallback to the default shader
		if (shader == null) shader = Shader.Find("Unlit/Transparent Colored");

		if (mMaterial != null)
		{
			mDynamicMat = new Material(mMaterial);
			mDynamicMat.name = "[NGUI] " + mMaterial.name;
			mDynamicMat.hideFlags = HideFlags.DontSave | HideFlags.NotEditable;
			mDynamicMat.CopyPropertiesFromMaterial(mMaterial);
#if !UNITY_FLASH
			string[] keywords = mMaterial.shaderKeywords;
			for (int i = 0; i < keywords.Length; ++i)
				mDynamicMat.EnableKeyword(keywords[i]);
#endif
			// If there is a valid shader, assign it to the custom material
			if (shader != null)
			{
				mDynamicMat.shader = shader;
			}
			else if (mClipCount != 0)
			{
				Debug.LogError(shaderName + " shader doesn't have a clipped shader version for " + mClipCount + " clip regions");
			}
		}
		else
		{
			mDynamicMat = new Material(shader);
			mDynamicMat.name = "[NGUI] " + shader.name;
			mDynamicMat.hideFlags = HideFlags.DontSave | HideFlags.NotEditable;
		}
	}

Scroll Viewを作成したpanelの数が1でない場合、NGUIはパネルに同じように表示されているが、他のshaderを使用します.しかし、実際に使われているのは同じではありません.
解決方法:NGUIのエラーロールバックの前に、検索shaderが存在するかどうかを判断します.(カスタムシェーダーを使用しているかどうかは理解できます)
KeyCode:

		if (panel.clipping == Clipping.TextureMask)
		{
			mTextureClip = true;
			shader = Shader.Find("Hidden/" + shaderName + textureClip);
		}
		else if (mClipCount != 0)
		{
			shader = Shader.Find("Hidden/" + shaderName + " " + mClipCount);
			if (shader == null) shader = Shader.Find(shaderName + " " + mClipCount);

			// Legacy functionality
			if (shader == null && mClipCount == 1)
			{
				mLegacyShader = true;
				shader = Shader.Find(shaderName + soft);
			}
		}
		else shader = Shader.Find(shaderName);

		if(shader == null)
		{
			shader = Shader.Find(shaderName);
		}

		// Always fallback to the default shader
		if (shader == null) shader = Shader.Find("Unlit/Transparent Colored");