Wireless Bridging Problem

Hi All,

I have a Belkin F5D7230-4 router and I am trying to bridge to a Belkin F5D7130 extender.

My router is set up to enable Enable Wireless Bridging and the Extender is set up to
Enable Wireless Bridging & Enable Only Specific Access Points to connect with the WLAN MAC address of the router.

Both the router and the extender are set up with WEP 64 bit security with exactly the same code.

If I disable the security on the extender it works, but with it enabled it doesn't.

Any advice would be greatly appreciated.