From b502aa3c238a9479974eda6f449f4e8251d73c9d Mon Sep 17 00:00:00 2001
From: John <johndygit@live.com.ph>
Date: Wed, 25 Oct 2017 20:30:23 +0800
Subject: [PATCH] [unity] Handle null preview texture in editor.

---
 .../Asset Types/Editor/SkeletonDataAssetInspector.cs           | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/spine-unity/Assets/spine-unity/Asset Types/Editor/SkeletonDataAssetInspector.cs b/spine-unity/Assets/spine-unity/Asset Types/Editor/SkeletonDataAssetInspector.cs
index 43ee8ce84..c6d0bbc95 100644
--- a/spine-unity/Assets/spine-unity/Asset Types/Editor/SkeletonDataAssetInspector.cs	
+++ b/spine-unity/Assets/spine-unity/Asset Types/Editor/SkeletonDataAssetInspector.cs	
@@ -726,6 +726,9 @@ namespace Spine.Unity.Editor {
 		}
 
 		void DoRenderPreview (bool drawHandles) {
+			if (this.PreviewUtilityCamera.activeTexture == null || this.PreviewUtilityCamera.targetTexture == null )
+				return;
+
 			GameObject go = this.m_previewInstance;
 
 			if (m_requireRefresh && go != null) {