diff --git a/README.md b/README.md
index f8aa58a..a1e1845 100644
--- a/README.md
+++ b/README.md
@@ -43,7 +43,7 @@ The following custom nodes may also be used within workflows:
 
 - **Customizable Left Panel**: The left panel UI is customizable with UI Nodes.
 - **UI Node Ordering**: These UI nodes are ordered by their titles, and you can change the node titles to something like '10.steps' or '11.cfg'. You can also click on the title to compact the node on the workflow.
-- **Label Input**: Each UI node has a 'label' input, which should be a unique identifier used as the parameter name. 'loramode', 'lora', 'offsetX', 'offsetY' and 'scale' are internally used, so they cannot be used for labels.
+- **Label Input**: Each UI node has a 'label' input, which should be a unique identifier used as the parameter name. 'loramode' and 'lora' are internally used, so they cannot be used for labels.
 - **Enable Output**: Each UI node also has an 'enable' output to use with 'Control Bridge' for switching to bypass some nodes or FlipStreamSwitch* for switching input.
 - **Right Panel**: You can operate several prepared functions such as Status, Darker, Tagger, Preset, and Lora.
 - **Status**: The right panel shows ComfyUI status and error information.
diff --git a/flipstreamviewer.py b/flipstreamviewer.py
index d6b503d..b99ea5b 100644
--- a/flipstreamviewer.py
+++ b/flipstreamviewer.py
@@ -1313,9 +1313,9 @@ async def viewer(request):
                 <span id="darkerValue">{state["darker"]}</span>drk
             </div>
             <div class="row"><i>Preset</i></div>
-            {"".join([f"""
+            {"".join([f'''
             <button onclick="loadPreset(false, {{ presetFile: '{file.name}' }}, 'showPresetDialog')">{file.stem}</button>
-            """ for file in Path("preset", state["presetFolder"]).glob("*.json")])}
+            ''' for file in Path("preset", state["presetFolder"]).glob("*.json")])}
         </div>
     </div>
     <script>
@@ -1421,7 +1421,7 @@ async def set_frame(request):
     pngdata = base64.b64decode((await request.text()).split(',', 1)[1])
     with BytesIO(pngdata) as data:
         with BytesIO() as output:
-            iio.imwrite(output, [iio.imread(data)], format="png", compression=STREAM_COMPRESSION)
+            iio.imwrite(output, [iio.imread(data)], format="png", extension=".apng", compression=STREAM_COMPRESSION)
             frame_buffer = output.getvalue()
             frame_mtime = time.time()
     return web.Response()
@@ -1772,7 +1772,7 @@ class FlipStreamPreviewBox:
         image = Image.fromarray(buf)
         image.thumbnail((256, 256))
         with BytesIO() as output:
-            iio.imwrite(output, np.array(image), format="png", compression=STREAM_COMPRESSION)
+            iio.imwrite(output, np.array(image), format="png", extension=".png", compression=STREAM_COMPRESSION)
             state[label + "PreviewBox"] = (time.time(), output.getvalue())
         return ()
 
@@ -2393,7 +2393,7 @@ class FlipStreamViewer:
         buf = (tensor.detach().cpu().numpy() * 255).astype(np.uint8)
         buf = np.concatenate([buf, np.flip(buf, axis=0)])
         with BytesIO() as output:
-            iio.imwrite(output, buf, format='png', compression=STREAM_COMPRESSION, fps=fps)
+            iio.imwrite(output, buf, format='png', extension=".apng", compression=STREAM_COMPRESSION, fps=fps)
             frame_buffer = output.getvalue()
             frame_mtime = time.time()
         frame_updating = False
diff --git a/pyproject.toml b/pyproject.toml
index 3485573..febf559 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,7 +1,7 @@
 [project]
 name = "comfyui_flipstreamviewer"
 description = "ComfyUI_FlipStreamViewer is a tool that provides a customizable viewer interface for flipping images with frame interpolation."
-version = "3.1.4"
+version = "3.1.5"
 license = {file = "LICENSE.txt"}
 
 [project.urls]
diff --git a/workflows/animate.json b/workflows/animate.json
index a994a8e..3151375 100644
--- a/workflows/animate.json
+++ b/workflows/animate.json
@@ -1055,7 +1055,7 @@
         "checkpoints",
         "sd_xl_base_1.0.safetensors",
         "checkpoints",
-        "ComfyUI\\models\\checkpoints",
+        "ComfyUI/models/checkpoints",
         "",
         false,
         false,
@@ -1604,7 +1604,7 @@
         "input",
         "",
         "input",
-        "ComfyUI\\input",
+        "ComfyUI/input",
         "",
         false,
         true,
diff --git a/workflows/dmd2_and_lora.json b/workflows/dmd2_and_lora.json
index 6dae57d..64d3773 100644
--- a/workflows/dmd2_and_lora.json
+++ b/workflows/dmd2_and_lora.json
@@ -516,7 +516,7 @@
         "checkpoints",
         "sd_xl_base_1.0.safetensors",
         "checkpoints",
-        "ComfyUI\\models\\checkpoints",
+        "ComfyUI/models/checkpoints",
         "",
         false,
         false,
@@ -1391,4 +1391,4 @@
     "VHS_KeepIntermediate": true
   },
   "version": 0.4
-}
\ No newline at end of file
+}
diff --git a/workflows/grab_rembg_depth_animate.json b/workflows/grab_rembg_depth_animate.json
index eb77914..59b5bc8 100644
--- a/workflows/grab_rembg_depth_animate.json
+++ b/workflows/grab_rembg_depth_animate.json
@@ -349,7 +349,7 @@
         "checkpoints",
         "sd_xl_base_1.0.safetensors",
         "checkpoints",
-        "ComfyUI\\models\\checkpoints",
+        "ComfyUI/models/checkpoints",
         "",
         false,
         false,
@@ -1964,7 +1964,7 @@
             "format": "video/h264-mp4",
             "frame_rate": 8,
             "workflow": "sc_00001.png",
-            "fullpath": "C:\\work\\ComfyUI_windows_portable\\ComfyUI\\output\\sc_00001.mp4"
+            "fullpath": "ComfyUI/output/sc_00001.mp4"
           }
         }
       }
@@ -2616,7 +2616,7 @@
         "input",
         "",
         "input",
-        "ComfyUI\\input",
+        "ComfyUI/input",
         "",
         false,
         true,
diff --git a/workflows/quick_vid2vid.json b/workflows/quick_vid2vid.json
index bfadd54..fdd0a88 100644
--- a/workflows/quick_vid2vid.json
+++ b/workflows/quick_vid2vid.json
@@ -1122,7 +1122,7 @@
         "Node name for S&R": "ControlNetLoader"
       },
       "widgets_values": [
-        "SDXL\\CN-anytest_v4-marged_pn_dim256.safetensors"
+        "SDXL/CN-anytest_v4-marged_pn_dim256.safetensors"
       ]
     },
     {
@@ -1496,7 +1496,7 @@
         "input",
         "",
         "input",
-        "ComfyUI\\input",
+        "ComfyUI/input",
         "",
         false,
         true,
@@ -1738,7 +1738,7 @@
         "checkpoints",
         "sd_xl_base_1.0.safetensors",
         "checkpoints",
-        "ComfyUI\\models\\checkpoints",
+        "ComfyUI/models/checkpoints",
         "",
         false,
         true,
@@ -2362,4 +2362,4 @@
     "VHS_KeepIntermediate": true
   },
   "version": 0.4
-}
\ No newline at end of file
+}
diff --git a/workflows/segmask.json b/workflows/segmask.json
index 0234873..617a9d3 100644
--- a/workflows/segmask.json
+++ b/workflows/segmask.json
@@ -96,7 +96,7 @@
         "checkpoints",
         "sd_xl_base_1.0.safetensors",
         "checkpoints",
-        "ComfyUI\\models\\checkpoints",
+        "ComfyUI/models/checkpoints",
         "",
         false,
         false,
@@ -1910,4 +1910,4 @@
     "VHS_KeepIntermediate": true
   },
   "version": 0.4
-}
\ No newline at end of file
+}
diff --git a/workflows/simple.json b/workflows/simple.json
index b837923..350ca1b 100644
--- a/workflows/simple.json
+++ b/workflows/simple.json
@@ -768,7 +768,7 @@
         "checkpoints",
         "sd_xl_base_1.0.safetensors",
         "checkpoints",
-        "ComfyUI\\models\\checkpoints",
+        "ComfyUI/models/checkpoints",
         "",
         false,
         false,
@@ -1004,4 +1004,4 @@
     }
   },
   "version": 0.4
-}
\ No newline at end of file
+}