diff --git a/android/src/main/cpp/main.cpp b/android/src/main/cpp/main.cpp
index 1c26625..6cdb76b 100755
--- a/android/src/main/cpp/main.cpp
+++ b/android/src/main/cpp/main.cpp
@@ -286,6 +286,7 @@ JNIEXPORT void JNICALL Java_com_omixlab_panopainter_MainActivity_pickExternalCal
     LOG("data_path %s", file_path.c_str());
     App::I.data_path = file_path;
     App::I.work_path = file_path;
+    App::I.rec_path = file_path + "/frames";
 }
 JNIEXPORT void JNICALL Java_com_omixlab_panopainter_MainActivity_contentRectChanged(JNIEnv *end, jobject,
         jint wnd_w, jint wnd_h, jint rect_left, jint rect_top, jint rect_right, jint rect_bottom)
diff --git a/android/src/main/java/com/omixlab/panopainter/MainActivity.java b/android/src/main/java/com/omixlab/panopainter/MainActivity.java
index 7123306..ecad1de 100644
--- a/android/src/main/java/com/omixlab/panopainter/MainActivity.java
+++ b/android/src/main/java/com/omixlab/panopainter/MainActivity.java
@@ -64,6 +64,42 @@ public class MainActivity extends NativeActivity {
             else
                 Log.v("PanoPainterJava", "create path failed");
 
+        }
+        File frames = new File(pano_dir.getAbsolutePath(), "frames");
+        if (!frames.exists())
+        {
+            if (frames.mkdirs())
+                Log.v("PanoPainterJava", "create path " + frames.getAbsolutePath());
+            else
+                Log.v("PanoPainterJava", "create path failed: " + frames.getAbsolutePath());
+
+        }
+        File brushes = new File(pano_dir.getAbsolutePath(), "brushes");
+        if (!brushes.exists())
+        {
+            if (brushes.mkdirs())
+                Log.v("PanoPainterJava", "create path " + brushes.getAbsolutePath());
+            else
+                Log.v("PanoPainterJava", "create path failed: " + brushes.getAbsolutePath());
+
+        }
+        File brush_thumbs = new File(brushes.getAbsolutePath(), "thumbs");
+        if (!brush_thumbs.exists())
+        {
+            if (brush_thumbs.mkdirs())
+                Log.v("PanoPainterJava", "create path " + brush_thumbs.getAbsolutePath());
+            else
+                Log.v("PanoPainterJava", "create path failed: " + brush_thumbs.getAbsolutePath());
+
+        }
+        File settings = new File(pano_dir.getAbsolutePath(), "settings");
+        if (!settings.exists())
+        {
+            if (settings.mkdirs())
+                Log.v("PanoPainterJava", "create path " + settings.getAbsolutePath());
+            else
+                Log.v("PanoPainterJava", "create path failed: " + settings.getAbsolutePath());
+
         }
         pickExternalCallback(pano_dir.getAbsolutePath());
     }
diff --git a/src/app.cpp b/src/app.cpp
index 0c6260a..0e448ed 100644
--- a/src/app.cpp
+++ b/src/app.cpp
@@ -618,7 +618,6 @@ void App::update(float dt)
             if (dfbo != rfbo)
                 LOG("DIFFERENT FB");
 
-            glReadBuffer(GL_FRONT);
             glReadPixels(0, 0, width, height, GL_RGBA, GL_UNSIGNED_BYTE, data);
             {
                 std::lock_guard<std::mutex> lock(rec_mutex);
diff --git a/src/canvas.cpp b/src/canvas.cpp
index faa1a1a..31378b6 100644
--- a/src/canvas.cpp
+++ b/src/canvas.cpp
@@ -2719,7 +2719,7 @@ Layer::Snapshot Layer::snapshot()
 
         snap.image[i] = std::make_unique<uint8_t[]>(m_rtt[i].bytes());
 
-        glReadBuffer(GL_BACK);
+        //glReadBuffer(GL_BACK);
         m_rtt[i].bindFramebuffer();
         glm::vec2 box_sz = zw(m_dirty_box[i]) - xy(m_dirty_box[i]);
         glReadPixels(m_dirty_box[i].x, m_dirty_box[i].y, box_sz.x, box_sz.y, GL_RGBA, GL_UNSIGNED_BYTE, snap.image[i].get());