Converting to Ogre Mesh

I have downloaded all the appropriate tools, I think. I have a model of a (very large and detailed) building. I was told that I should rotate the whole model around the red axis before converting, so I did.

http://www.rigsofrods.com/wiki/pages/Sketchup_Tutorial

I ran the converter but its been running for several hours now. Should it take this long? Is there anything I can do to speed it up?

Have you tried with a simple model before to verify that all is working correctly?

I just ran a sample model and it managed to create both the mesh and model. I just want to make sure the program has not froze on my larger project. The .skp that I am trying to convert is around 121MB. Does the ogre converter have a model size limit?