can't delete networks with nova-manage after quantum install

[Ask Stack]

I am follwing this guide,
http://fedoraproject.org/wiki/QA:Testcase_run_Nova_with_Quantum,  to install quantum and openvswitch.
All the tests passed. I can create and delete networks with quantum. 

However I can create network with nova-manage but CAN NOT delete network with nova-manage.

[root at core01 quantum]# nova-manage network list
id   	IPv4              	IPv6           	start address  	DNS1           	DNS2           	VlanID         	project        	uuid           
1    	10.0.0.0/24       	None           	10.0.0.2       	8.8.4.4        	None           	None           	None           	46f8478c-bd1a-43a9-9f66-bc084e1bebc7
2    	4.4.4.0/24        	None           	4.4.4.2        	8.8.4.4        	None           	None           	None           	49555ceb-b45b-4aa6-afc2-f16115fe8a53
3    	8.8.8.0/24        	None           	8.8.8.2        	8.8.4.4        	None           	None           	None           	8addf747-15ef-415a-b643-7e02e6da02f4
4    	10.10.0.0/24      	None           	10.10.0.2      	8.8.4.4        	None           	None           	None           	140ec49e-3a8a-497c-bc41-35a44e1226db
[root at core01 quantum]# nova-manage network delete 10.10.0.0/24
Command failed, please check log for more info
2012-05-10 18:02:46 CRITICAL nova [-] UUID is required to delete Quantum Networks
[root at core01 quantum]# nova-manage network delete 140ec49e-3a8a-497c-bc41-35a44e1226db
Command failed, please check log for more info
2012-05-10 18:02:53 CRITICAL nova [-] UUID is required to delete Quantum Networks


Also , these networks do not show wtih "quantum list_nets  <tenant-id>"This is a fedora16 with essex environment.

openstack-quantum-openvswitch-2012.1-1.fc16.noarch
python-quantum-2012.1-1.fc16.noarch
python-quantumclient-2012.1-1.fc16.noarch
openstack-quantum-2012.1-1.fc16.noarch
openvswitch-1.4.0-5.fc16.x86_64


any help is appreciated.