Show error when zip compressed mesh can't be saved.
Show error when zip compressed mesh can't be saved.

RealityFactory/ogre,OGRECave/ogre,RealityFactory/ogre,OGRECave/ogre,paroj/ogre,RealityFactory/ogre,paroj/ogre,OGRECave/ogre,paroj/ogre,paroj/ogre,paroj/ogre,RealityFactory/ogre,OGRECave/ogre,RealityFactory/ogre,OGRECave/ogre