This message you get, if you try to load a tpl, which is not compatible with hfs2.4rc
I work also with rc7.
Which version of the tpl you use?
Download the actual version from the
forum or
githubif it still doesn't work then post the template here in the forum or send it with a message to me.
Change file to... mobil-light_V5.5.5.12.tpl (not hfs.filelist.tpl!)