Error when clicking "start coova-chilli" from Status->Hotspot menu

I've JUST flashed a WRT54GL with the CoovaAP firmware and set basic hotspot options. I go to check hotspot status, where it says coova-chilli is no running. I click start, and the following happens, with the error repeating indefinitely. A little help?

Starting coova-chilli...
Splitting the wired from wireless
Resetting the network interfaces...
coova-chilli[10624]: options.c: 164: could not generate configuration, sleeping one second
coova-chilli[10624]: options.c: 164: could not generate configuration, sleeping one second
coova-chilli[10624]: options.c: 164: could not generate configuration, sleeping one second
coova-chilli[10624]: options.c: 164: could not generate configuration, sleeping one second...etc

same issue

Can anybody tell the solution for above problem.

Thanks,
Ram