diff --git a/Notebooks/Node Streaming Benchmark.ipynb b/Notebooks/Node Streaming Benchmark.ipynb
index 7baacef..402cf97 100644
--- a/Notebooks/Node Streaming Benchmark.ipynb	
+++ b/Notebooks/Node Streaming Benchmark.ipynb	
@@ -24,29 +24,20 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "load = ld2dap.LoadTIFF('../Data/test.tiff')\n",
+    "load = ld2dap.LoadTIFF(('../Data/test.tiff', '../Data/test2.tiff'))\n",
     "trsh = ld2dap.Treshold(1e4)\n",
+    "aps  = ld2dap.AttributeProfiles(area=[100, 1e3, 1e4])\n",
+    "aps2 = ld2dap.AttributeProfiles(area=[100, 1e3, 1e4])\n",
+    "\n",
     "disp = ld2dap.ShowFig(fname=None)\n",
-    "out  = ld2dap.RawOutput()"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": [
-    "disp.input = trsh\n",
+    "out  = ld2dap.RawOutput()\n",
+    "\n",
+    "aps2.input = aps\n",
+    "out.input  = aps\n",
+    "disp.input = aps\n",
+    "aps.input  = trsh\n",
     "trsh.input = load\n",
-    "out.input = trsh"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": [
+    "\n",
     "disp.run()"
    ]
   },
diff --git a/ld2dap/AttributeProfiles.py b/ld2dap/AttributeProfiles.py
index 1334857..78bbe8d 100644
--- a/ld2dap/AttributeProfiles.py
+++ b/ld2dap/AttributeProfiles.py
@@ -69,7 +69,10 @@ class AttributeProfiles(Filter):
                 raise NotImplementedError('Nested filtering not implemented yet')
 
             for att in ['area', 'sd', 'moi']:
-                stack_new = Stack(stack_offset * stack.begin, att_offset[att], 
+                if att_offset[att] == 0:
+                    continue
+
+                stack_new = Stack(stack_offset * stack.begin, att_offset[att],
                         stack.desc[0], stack.symb[0])
 
                 for old_desc, new_desc in zip(stack_new.desc, att_desc[att]):
diff --git a/ld2dap/LoadTIFF.py b/ld2dap/LoadTIFF.py
index cdc723e..134c3c4 100644
--- a/ld2dap/LoadTIFF.py
+++ b/ld2dap/LoadTIFF.py
@@ -19,7 +19,7 @@ import triskele
 class LoadTIFF(Input):
     def __init__(self, tiffFiles):
         super().__init__(self.__class__.__name__)
-        self.files = tiffFiles if isinstance(tiffFiles, list) else [tiffFiles]
+        self.files = tiffFiles if isinstance(tiffFiles, (tuple, list)) else [tiffFiles]
 
     def _process(self, data, metadata):
         layers = list()
diff --git a/test.py b/test.py
index 0e9d325..795efed 100644
--- a/test.py
+++ b/test.py
@@ -18,7 +18,7 @@ def main():
     i = LoadTIFF(['Data/test.tiff', 'Data/test2.tiff'])
     t = Treshold(1e4)
     ap = APs(np.array([100,1e3,1e4]))
-    o = SaveFig('test.png')
+    o = SaveFig('Res/test.png')
     s = ShowFig(None)
 
     t.input = i