rviz doesn't show custom plugin

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Hey,

I created a plugin to show a mesh in rviz (basically an adaptation of the Polygon display). I had previously changed the source of the Polygon display to accept my message and display it as a mesh, this works fine. Then I wanted to export this plugin to my own package, however rviz doesn't seem to recognize it.

According to the tutorial, common problems are :

-Not having a plugin_description.xml (I have this located in the same package as the new plugin)

-Not exporting it in a package.xml file (I export it as follows:

<export>
    <rviz plugin="${prefix}/plugin_description.xml"/>
</export>

-Not properly referencing the library file from plugin_description.xml (I reference the path as

<library path="lib/librviz_plugin">

I reference the class as:

<class name="mesh_tools/Mesh" type="mesh::MeshDisplay" base_class_type="rviz::Display">

Which is inside the mesh_tools package. The class is called mesh::MeshDisplay and as is done for rviz::Polygon display, it has rviz::Display as base class. When I make everything, I do indeed get a devel/lib/librviz_plugin.so. The plugin_description.xml is not copied to the devel folder however. If I do catkin_make_isolated --install it will get copied, but rviz still can't see the display.

What can I do to debug this further? By the way, I am on Indigo with Ubuntu 14.04.

Best regards, Hans