Failed to add default gateway 172.30.0.17 via interface VLAN- 300 to IP stack

Hi,

I have recenty moved from one WAN provider to another (C&W to Virgin Media). All seemed to test fine and we have now changed the routing to go out of the Virgin circuit (VLAN 300) from VLAN 201. For some reason we are not getting the following errors on the switch. I can't find any reference to them online and was wondering if someone could assist:

Failed to add default gateway 172.30.0.17 via interface VLAN- 300 to IP stack

Failed to set the default gateway in the IP stack

There are two 6224 switches running VRRP connected to two Cisco routers - vendor provided - also running VRRP (IP 172.30.0.17)

Here is the config of Core1

!Current Configuration:
!System Description "Powerconnect 6224, 3.2.1.3, VxWorks 6.5"
!System Software Version 3.2.1.3
!Cut-through mode is configured as disabled
!
configure
vlan database
vlan 64,80,96,112,201,300
vlan routing 64 1
vlan routing 80 2
vlan routing 96 3
vlan routing 112 4
vlan routing 201 5
vlan routing 300 6
exit
snmp-server location "Leeds Comms Room"
snmp-server contact "IT Support"
hostname "le-core1"
sntp unicast client enable
sntp server 172.19.64.6
stack
member 1 1
exit
ip address dhcp
ip domain-name expotel.local
ip name-server 172.19.64.6
ip name-server 172.17.0.6
logging file debug
logging buffered warning
logging facility local0
logging 172.17.0.81
exit
ip routing
ip route 0.0.0.0 0.0.0.0 172.30.0.17
ip helper-address 172.19.64.6
interface vlan 64
name "Server"
routing
ip address 172.19.79.251 255.255.240.0
ip vrrp 1
ip vrrp 1 mode
ip vrrp 1 ip 172.19.79.254
exit
interface vlan 80
name "Telephony"
routing
ip address 172.19.95.251 255.255.240.0
ip vrrp 2
ip vrrp 2 mode
ip vrrp 2 ip 172.19.95.254
exit
interface vlan 96
name "Wireless"
routing
ip address 172.19.111.251 255.255.240.0
ip vrrp 3
ip vrrp 3 mode
ip vrrp 3 ip 172.19.111.254
exit
interface vlan 112
name "Computer"
routing
ip address 172.19.127.251 255.255.240.0
ip vrrp 4
ip vrrp 4 mode
ip vrrp 4 ip 172.19.127.254
exit
interface vlan 201
name "CW IPVPN"
routing
ip address 172.30.1.4 255.255.255.248
ip vrrp 5
ip vrrp 5 mode
ip vrrp 5 ip 172.30.1.6
exit
interface vlan 300
name "Virgin IPVPN"
routing
ip address 172.30.0.20 255.255.255.248
ip vrrp 6
ip vrrp 6 mode
ip vrrp 6 ip 172.30.0.22
exit
spanning-tree priority 16384
ip vrrp
!
interface ethernet 1/g1
no negotiation
spanning-tree disable
switchport mode trunk
switchport trunk allowed vlan add 300
exit
!
interface ethernet 1/g2
no negotiation
speed 10
duplex half
exit
!
interface ethernet 1/g3
shutdown
switchport access vlan 201
exit
!
interface ethernet 1/g4
spanning-tree auto-portfast
switchport access vlan 64
exit
!
interface ethernet 1/g11
spanning-tree auto-portfast
switchport access vlan 80
exit
!
interface ethernet 1/g13
spanning-tree auto-portfast
switchport access vlan 64
exit
!
interface ethernet 1/g14
spanning-tree auto-portfast
switchport access vlan 64
exit
!
interface ethernet 1/g15
spanning-tree auto-portfast
switchport access vlan 64
exit
!
interface ethernet 1/g16
spanning-tree auto-portfast
switchport access vlan 64
exit
!
interface ethernet 1/g17
spanning-tree auto-portfast
switchport access vlan 64
exit
!
interface ethernet 1/g18
spanning-tree auto-portfast
switchport access vlan 64
exit
!
interface ethernet 1/g19
spanning-tree auto-portfast
switchport access vlan 64
exit
!
interface ethernet 1/g20
spanning-tree auto-portfast
switchport access vlan 64
exit
!
interface ethernet 1/g21
channel-group 1 mode auto
exit
!
interface ethernet 1/g22
channel-group 1 mode auto
exit
!
interface ethernet 1/g23
switchport access vlan 64
exit
!
interface ethernet 1/g24
switchport mode trunk
switchport trunk allowed vlan add 64,80,96,112
exit
!
interface port-channel 1
switchport mode trunk
switchport trunk allowed vlan add 64,80,96,112,201,300
exit
exit

Any ideas would be greatly appreciated.

Alex