iwproxy_preconnect_remap problem

System

The following regexp failed upon iwproxy start up:
_regex=^/iw-mount/default/main/****/WORKAREA/\d{1}\_\w*?/(.*\.jpg)=/iw-mount/default/main/****/WORKAREA/images/$1

It is a valid perl regexp (I've tested it). Is there something I'm missing? My problem is the the regexp is too greedy if you do /.*/(*.jpg)

Thanks