User warning when creating taxonews block

Hey,

Every time I create a taxonewsblock on our website I get the following user warning:

user warning: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'DISTINCT(n.nid)) FROM term_node tn INNER JOIN node n ON tn.nid = n.nid WHERE tn.' at line 1 query: SELECT COUNT(t DISTINCT(n.nid)) FROM term_node tn INNER JOIN node n ON tn.nid = n.nid WHERE tn.tid = 60 AND n.status = 1 AND tn.nid NOT IN (1231510851,1231510390,1231403310,1231403143,1231317667,1231317057,1231237645,1231234126,1231233918,1231168059,1230895104,1230293661,1229874226,1229501520,1229420232,1229416405,1229415222,1229337828,1229337563,1229337356,1229337034,1229335076,1229334463,1229333747,1229332783,1229332133) LIMIT 0, 1 in /usr/home/neo1327/public_html/includes/database.mysql.inc on line 174.

does anybody has an idea what goes wrong. The taxonewsblock itself appears on screen but on every page I get this user warning?
I'm using the taxonews-5.x-1.x-dev of the taxonews module.

Thanks for the answers / suggestions,
Tom