Collada version problem when spawning model

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I'm trying to spawn the youbot model by WPI-RAIL in Gazebo 1.9 using ROS Groovy on Ubuntu 12.04.

After compiling the xacro files using

rosrun xacro xacro.py youbot.urdf.xacro > youbot.urdf

I try to spawn the model using

rosrun gazebo_ros spawn_model -file `rospack find youbot_description`/robots/youbot.urdf -urdf -x 0 -y 0 -z 1 -model youbot-test

and even though the model is actually shown inside Gazebo, I get a few of these errors in the terminal where gazebo is in execution

Error [ColladaLoader.cc:77] Invalid collada file. Must be version 1.4.0 or 1.4.1

Looking at the meshes in the project, I found out that some of the meshes for the arm are actually version 1.5.

Is this compromising the full spawn of the robot simulation? Is there a way to allow both 1.4 and 1.5 Collada files in the same project?