Click with netmap - Segmentation fault

Hi everybody,

we have a problem running click with netmap.
We are using netmap version 20120813 with the development version of
click from the git repository.
We are trying to generate packets with pkt-gen and forward them to
another machine running pkt-gen in receiver mode.
As configuration for click we use:

FromDevice(eth9, METHOD NETMAP) -> c1::AverageCounter() -> Queue() ->
ToDevice(eth8);

After a short time of successfull forwarding, click crashes displaying a "Segmentation fault (core dumped)".
Has anybody else encountered this problem yet and perhaps a solution available.

Thank you in advance and best regards,

Richard Neumann