Symptom
The device crashes in Forwarding Manager (FMAN) during the modification on AppNav Feature configuration.
Conditions
AppNav-XE configuration is removed/changed from CLI, when AppNav-XE device is managed by WCM(WAAS Central Manager).
Due to AppNav-XE feature configuration changes through CLI, WCM detects a mismatch between current configuration in router and router's configuration present in WCM.
Crash is seen while WCM pushing unconfig & configuration of AppNav-XE in short duration of time, due to config mismatch.
Workaround
When AppNav-XE is managed by WCM, its recommended to do all the config changes related to AppNav-XE from WCM.