diff --git a/docs/tutorials/bundle_adjustment.ipynb b/docs/tutorials/bundle_adjustment.ipynb
index e5dfe700..67862446 100644
--- a/docs/tutorials/bundle_adjustment.ipynb
+++ b/docs/tutorials/bundle_adjustment.ipynb
@@ -82,6 +82,7 @@
    "source": [
     "!pip install torch torchvision\n",
     "import sys\n",
+    "import torch\n",
     "if torch.__version__=='1.6.0+cu101' and sys.platform.startswith('linux'):\n",
     "    !pip install pytorch3d\n",
     "else:\n",
diff --git a/docs/tutorials/camera_position_optimization_with_differentiable_rendering.ipynb b/docs/tutorials/camera_position_optimization_with_differentiable_rendering.ipynb
index bf9216a4..ee879db3 100644
--- a/docs/tutorials/camera_position_optimization_with_differentiable_rendering.ipynb
+++ b/docs/tutorials/camera_position_optimization_with_differentiable_rendering.ipynb
@@ -69,6 +69,7 @@
    "source": [
     "!pip install torch torchvision\n",
     "import sys\n",
+    "import torch\n",
     "if torch.__version__=='1.6.0+cu101' and sys.platform.startswith('linux'):\n",
     "    !pip install pytorch3d\n",
     "else:\n",
@@ -99,7 +100,7 @@
     "from pytorch3d.io import load_obj\n",
     "\n",
     "# datastructures\n",
-    "from pytorch3d.structures import Meshes, Textures\n",
+    "from pytorch3d.structures import Meshes\n",
     "\n",
     "# 3D transformations functions\n",
     "from pytorch3d.transforms import Rotate, Translate\n",
@@ -108,7 +109,7 @@
     "from pytorch3d.renderer import (\n",
     "    FoVPerspectiveCameras, look_at_view_transform, look_at_rotation, \n",
     "    RasterizationSettings, MeshRenderer, MeshRasterizer, BlendParams,\n",
-    "    SoftSilhouetteShader, HardPhongShader, PointLights\n",
+    "    SoftSilhouetteShader, HardPhongShader, PointLights, TexturesVertex,\n",
     ")"
    ]
   },
@@ -175,7 +176,7 @@
     "\n",
     "# Initialize each vertex to be white in color.\n",
     "verts_rgb = torch.ones_like(verts)[None]  # (1, V, 3)\n",
-    "textures = Textures(verts_rgb=verts_rgb.to(device))\n",
+    "textures = TexturesVertex(verts_features=verts_rgb.to(device))\n",
     "\n",
     "# Create a Meshes object for the teapot. Here we have only one mesh in the batch.\n",
     "teapot_mesh = Meshes(\n",
diff --git a/docs/tutorials/dataloaders_ShapeNetCore_R2N2.ipynb b/docs/tutorials/dataloaders_ShapeNetCore_R2N2.ipynb
index 8d7e6e49..15c3f9e0 100644
--- a/docs/tutorials/dataloaders_ShapeNetCore_R2N2.ipynb
+++ b/docs/tutorials/dataloaders_ShapeNetCore_R2N2.ipynb
@@ -44,6 +44,7 @@
    "source": [
     "!pip install torch torchvision\n",
     "import sys\n",
+    "import torch\n",
     "if torch.__version__=='1.6.0+cu101' and sys.platform.startswith('linux'):\n",
     "    !pip install pytorch3d\n",
     "else:\n",
diff --git a/docs/tutorials/deform_source_mesh_to_target_mesh.ipynb b/docs/tutorials/deform_source_mesh_to_target_mesh.ipynb
index 030cad59..f6a83206 100644
--- a/docs/tutorials/deform_source_mesh_to_target_mesh.ipynb
+++ b/docs/tutorials/deform_source_mesh_to_target_mesh.ipynb
@@ -83,6 +83,7 @@
    "source": [
     "!pip install torch torchvision\n",
     "import sys\n",
+    "import torch\n",
     "if torch.__version__=='1.6.0+cu101' and sys.platform.startswith('linux'):\n",
     "    !pip install pytorch3d\n",
     "else:\n",
@@ -494,7 +495,7 @@
    "bento/extensions/theme/main.css": true
   },
   "colab": {
-   "name": "FitMesh.ipynb",
+   "name": "deform_source_mesh_to_target_mesh.ipynb",
    "provenance": []
   },
   "kernelspec": {
diff --git a/docs/tutorials/fit_textured_mesh.ipynb b/docs/tutorials/fit_textured_mesh.ipynb
index 3c4c8250..b751dc3a 100644
--- a/docs/tutorials/fit_textured_mesh.ipynb
+++ b/docs/tutorials/fit_textured_mesh.ipynb
@@ -61,6 +61,7 @@
    "source": [
     "!pip install torch torchvision\n",
     "import sys\n",
+    "import torch\n",
     "if torch.__version__=='1.6.0+cu101' and sys.platform.startswith('linux'):\n",
     "    !pip install pytorch3d\n",
     "else:\n",
diff --git a/docs/tutorials/render_colored_points.ipynb b/docs/tutorials/render_colored_points.ipynb
index bab57376..954fd354 100644
--- a/docs/tutorials/render_colored_points.ipynb
+++ b/docs/tutorials/render_colored_points.ipynb
@@ -43,6 +43,7 @@
    "source": [
     "!pip install torch torchvision\n",
     "import sys\n",
+    "import torch\n",
     "if torch.__version__=='1.6.0+cu101' and sys.platform.startswith('linux'):\n",
     "    !pip install pytorch3d\n",
     "else:\n",
diff --git a/docs/tutorials/render_textured_meshes.ipynb b/docs/tutorials/render_textured_meshes.ipynb
index 6dca1a3d..1e3033cc 100644
--- a/docs/tutorials/render_textured_meshes.ipynb
+++ b/docs/tutorials/render_textured_meshes.ipynb
@@ -66,6 +66,7 @@
    "source": [
     "!pip install torch torchvision\n",
     "import sys\n",
+    "import torch\n",
     "if torch.__version__=='1.6.0+cu101' and sys.platform.startswith('linux'):\n",
     "    !pip install pytorch3d\n",
     "else:\n",
@@ -542,7 +543,7 @@
    "source": [
     "# We can pass arbirary keyword arguments to the rasterizer/shader via the renderer\n",
     "# so the renderer does not need to be reinitialized if any of the settings change.\n",
-    "images = renderer(mesh, cameras=cameras, lights=lights)"
+    "images = renderer(meshes, cameras=cameras, lights=lights)"
    ]
   },
   {
diff --git a/pytorch3d/renderer/mesh/rasterizer.py b/pytorch3d/renderer/mesh/rasterizer.py
index ac0b7402..424cdb44 100644
--- a/pytorch3d/renderer/mesh/rasterizer.py
+++ b/pytorch3d/renderer/mesh/rasterizer.py
@@ -94,6 +94,12 @@ class MeshRasterizer(nn.Module):
             msg = "Cameras must be specified either at initialization \
                 or in the forward pass of MeshRasterizer"
             raise ValueError(msg)
+
+        n_cameras = len(cameras)
+        if n_cameras != 1 and n_cameras != len(meshes_world):
+            msg = "Wrong number (%r) of cameras for %r meshes"
+            raise ValueError(msg % (n_cameras, len(meshes_world)))
+
         verts_world = meshes_world.verts_padded()
 
         # NOTE: Retaining view space z coordinate for now.