[M1] compiling jasper reports

Hi,

anybody has experience with compiling jasperreports with Maven 1?

I tried to integrate their ant task into my maven.xml, but I keep getting
"No supported regular expression matcher found".

I check the jasper forums (http://www.jasperforge.org) and found simular
questions, but none of the proposed solutions seem to work.

any help would be highly appriciated!

regards,

Wim