OGRE xml loading problem

I converted an OBJ to an OGRE file, but if i try to load it, i get this error

“WARNUNG: No loader registered for type xml.”

It’ my first experience with ogre, therefore i’m clueless and need help please.

I loaded the OBJ file with Maya and exported with the Maya 2009 exporter to *.mesh

Next step I converted *.mesh to *.xml with OgreCommandLineTools. The xml file seems to be ok. Thanks for any help or idea!