diff --git a/pano360demo/release/pano360demo-release.apk b/pano360demo/release/pano360demo-release.apk
index 8383863..fe892c7 100644
Binary files a/pano360demo/release/pano360demo-release.apk and b/pano360demo/release/pano360demo-release.apk differ
diff --git a/pano360demo/src/main/java/com/martin/ads/pano360demo/HomeActivity.java b/pano360demo/src/main/java/com/martin/ads/pano360demo/HomeActivity.java
index 9aabbec..f2a42f1 100644
--- a/pano360demo/src/main/java/com/martin/ads/pano360demo/HomeActivity.java
+++ b/pano360demo/src/main/java/com/martin/ads/pano360demo/HomeActivity.java
@@ -130,7 +130,8 @@ private void start(){
                 .setFilePath(filePath)
                 .setMimeType(mimeType)
                 .setPlaneModeEnabled(planeModeEnabled)
-                .setRemoveHotspot(false)
+                //set it false to see default hotspot
+                .setRemoveHotspot(true)
                 .setVideoHotspotPath(videoHotspotPath);
 
         if((mimeType & MimeType.BITMAP)!=0){
diff --git a/vrlib/src/main/java/com/martin/ads/vrlib/PanoRender.java b/vrlib/src/main/java/com/martin/ads/vrlib/PanoRender.java
index 8f963df..62242f6 100644
--- a/vrlib/src/main/java/com/martin/ads/vrlib/PanoRender.java
+++ b/vrlib/src/main/java/com/martin/ads/vrlib/PanoRender.java
@@ -123,8 +123,8 @@ public void onDrawFrame(GL10 glUnused) {
             panoMediaPlayerWrapper.doTextureUpdate(((OESFilter)firstPassFilter).getSTMatrix());
         }
         filterGroup.drawToFBO(0,fbo);
-        fbo.unbind();
-        screenDrawer.onDrawFrame(fbo.getFrameBufferTextureId());
+        if(fbo!=null)
+            screenDrawer.onDrawFrame(fbo.getFrameBufferTextureId());
 
         if (saveImg){
             BitmapUtils.sendImage(surfaceWidth, surfaceHeight,statusHelper.getContext());
diff --git a/vrlib/src/main/java/com/martin/ads/vrlib/filters/base/FilterGroup.java b/vrlib/src/main/java/com/martin/ads/vrlib/filters/base/FilterGroup.java
index 4ff83e1..5cedee1 100644
--- a/vrlib/src/main/java/com/martin/ads/vrlib/filters/base/FilterGroup.java
+++ b/vrlib/src/main/java/com/martin/ads/vrlib/filters/base/FilterGroup.java
@@ -76,6 +76,7 @@ public void drawToFBO(int textureId,FBO fbo) {
                 }else{
                     filter.onDrawFrame(previousTexture);
                 }
+                fbo.unbind();
             }
         }
     }