Empty enrtry in view Data Sources when adding external sourc

[hoger]

Hello,

When I try to add an external data source in 0.8.3a and therefor select "None" for "Selected Data Template" and "Host" I cannot access this data source anymore. In the view "Data Sources" the name is empty and therefor not selectable, when I access it via the id I get:

Undefined variable: rrd_template in /data1/local/monitor.mydomain.com/cacti-0.8.3a/data_sources.php on line 761

Does anybody have a suggestion?

Thanks
/Gerry