It looks like there’s a back end error, do you have anything in your php error logs? a debug version might also help (which you can get from our svn repository)
Inaonekana kama kuna kosa nyuma mwisho, je, una chochote katika kumbukumbu yako php kosa? Ondoa Hitialfu version ili pia kusaidia (ambayo unaweza kupata kutoka seli zetu svn)