[Rdfapi-php-interest] Sparql bugs?

Hi,
where should one post bug reports/questions for Rdfapi-php. I have a problem
with some sparql queries but the bugs over at
http://sourceforge.net/tracker/?group_id=63257 seem to be unattended?
The problem:
In a FILTER ">" (biger that) is not accepted.
Example:
FILTER (?start > "2008-11-26T23:59:59Z) works fine but FILTER (?start >
"2008-11-26T23:59:59Z) causes the following error:
Fatal error: Uncaught exception 'SparqlEngineDb_SqlGeneratorException' with
message 'Unsupported tree type: ' in
/home/space/vernkirche/htdocs/sw/includes/rdfapi-php/api/sparql/SparqlEngineDb/FilterGenerator.php:124
Stack trace: #0
/home/space/vernkirche/htdocs/sw/includes/rdfapi-php/api/sparql/SparqlEngineD....

Greetings
Bart