Hi Aaron,
Couple of questions.  Which COLLADA version is your dae file?  Can you post your urdf file and the dae file?  Also, as a sanity check, try below and make sure the file exists:

ls `rospack find urdf_tutorial`/mymodel.dae

hope this helps.
John


On Fri, Feb 4, 2011 at 3:44 AM, Aaron Martinez Romero <aaronmartinezromero@gmail.com> wrote:
Hi everyone,

Somebody know how can I load in my urdf a model from google sketup?? I am exporting the model in dae file, but I always obtain this error message:

[ERROR] [1296819682.438922687]: Could not load resource [package://urdf_tutorial/mymodel.dae]: Collada: package://urdf_tutorial/mymodel.dae - Expected opening element
[ERROR] [1296819682.439516423]: Could not load model 'package://urdf_tutorial/mymodel.dae' for link 'right_leg': OGRE EXCEPTION(6:FileNotFoundException): Cannot locate resource package://urdf_tutorial/mymodel.dae in resource group Autodetect or any other group. in ResourceGroupManager::openResource at /tmp/buildd/ros-cturtle-visualization-common-1.2.0/debian/ros-cturtle-visualization-common/opt/ros/cturtle/stacks/visualization_common/ogre/build/ogre_src_v1-7-1/OgreMain/src/OgreResourceGroupManager.cpp (line 753)


If I use other model, like "<mesh filename="package://pr2_description/meshes/gripper_v0/l_finger.dae"/>" works.

Best regards.
--
Atentamente,
Aarón Martínez Romero
Ingeniero en Informática
Tlf: 600 283 349
http://www.AaronMR.com

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