Hi, Currently .txml, .tbin, .scene, and .mesh files are supported (+ .material d'n'd applying for meshes that are already instantiated in the world). See also http://realxtend.org/doxygen/_tundra_documentfiles.html
As for bug tracker, either the Google Code or GitHub one can be used. Hopefully we'll have only single one in the near future. Grey skies, Ali Kämäräinen -- http://groups.google.com/group/realxtend http://www.realxtend.org