Freizeitkarte - OsmosisRuntimeException: Task type "repa" already exis

when starting “ join” I always get an osmosis exception Task type “repa” already exists.
I could only find one question in OSM Lists regarding this but without answer.
How can I fix this?

running on windows with Java™ SE Runtime Environment (build 1.6.0_27-b07) and Perl v5.16.0

forget it, I deleted the Freizeitkarte folder and installed a new one and now it works