Comment 8 for bug 451015

Assuming your problem is also really caused by curly braces and not angle brackets, this is now fixed in git. If the Ubuntu packagers want to include this fix, here's the commit:

http://git.gnome.org/cgit/tasque/commit/?id=8eacf29f2a7a4d295d3ccae13272bd1eef2a9dc0