[dotNetRDF-bugs] help !

[Philippe L. <phi...@pa...>]

Dear sir

I have installed the SPARQL GUI. I import a local file and all seems ok 
. I have the indication of the number of triples . No problem
But when I try a query, i have an answer with the name of variables but 
no answer. Just the names of variables (0 result)
Even with the more simple request or all others

SELECT ?s ?p ?ob
WHERE
{
   ?s ?p ?ob .
}

I am sorry because the tool seems very useful and friendly .

What happens ?

best regards
philippe