This may be a configuration error. Are you trying to use vlan 100 for outside interface? VLAN 100 is used for voice subnet. You may want to use interface fastethernet 0/0 (WAN) for outside interface.

-Saurabh

of course im using FastEthernet0/0.

From a brand new config this is how the error is reproduced.

First delete all firewall settings

Second delete NAT settings

create a VLAN, say 50, create DHCP pool, etc

Make sure FastEthernet0/0 is DHCP

now go into NAT, and try anything that makes a change and requires saving...  BOOM  error

this is with CCA2.1

from the CLI I have NAT outside for FastEthernet0/0

Nat inside for the VLANs 1 and 50, but not the BVIs (maybe thats an issue)

I also have attempted doing the "VLAN database" and recreating the vlan.dat

so I can ping from the FastEthernet0/0 to outside, but can not ping the outside from any other interface (vlan)

Let me run this scenario by the CCA engineering team.

-Saurabh

problem is resolved in CCA 2.1.1   !!!!!!!

thanks for the good news!!!!!