We have been using Cisco 4400 Wireless LAN Controller for two years. Yesterday, we got a report the wireless doesn't work. We found the problem is Cisco Wireless network Management Application doesn't start. If I try to start it, I get Wireless network Management Application with error 1067: the process terminated unexpectedly. I have tried clean boot, but that doesn't fix it. We haven't changed any thing on the server. Any suggestions?.
Sounds like the firmware is corrupt or the compact flash (CF) is dying.
Have you tried rebooting the appliance?
Have you tried upgrading the firmware?