Hi,
I'm using a free host (free.fr ;-)). It works after changing the glob() function, see:
http://forum.dokuwiki.org/thread/1318
I didn't have any problem with .xmlt and .i file suffixes.
But its way too slow to develop pages!
So I build my pages on my portable with a local host, and update the results.
Like Andi, suggest you get a real host!