I am not familiar with this launchpad thing, but it looks like that it is too new. The version from blender.org has version2.62.0/44136 (lower number than yours) and also the launchpad version has "blender-svn" in the name, which looks like it is a newer version which might have already the bmesh branch in it. I tried with the blender from subversion and got exactly your error message, so you most likely use a version that is too new to import files with UV-coordinates.