First steps with Zenoss and first problems - Graphs empty

Hi,

I'am a new Zenoss user and I have some problems. I'm sorry if I do stupid questions but I have not found the solutions to my issues.

Some details to explain the view of the situation:

- Zenoss 4.2.3 r26491;

- OS Linux (x86_64);

- devices to monitor: Juniper EX-4200;

- ZenPacks installed by me: ZenPacks.ZenSystems.Juniper (v. 2.0), ZenPacks.community.JuniperPerformance (v. 1.0) and ZenPacks.community.SNMPLocation (v. 2.0.1).

- Device class: /Network/Switch/Juniper

The plugin selected to monitor devices are (in order):

- zenoss.snmp.NewDeviceMap;

- zenoss.snmp.DeviceMap;

- zenoss.snmp.InterfaceMap;

- zenoss.snmp.RouteMap;

- zenoss.snmp.IpServiceMap;

- zenoss.snmp.HRFFileSystemMap;

- zenoss.snmp.HRSWInstalledMap;

- JuniperDeviceMap;

- JuniperFanMap;

- JuniperPowerSupplyMap;

- JuniperRoutingEngineMap;

- JuniperFPCMap;

- JuniperPICMap;

- JuniperBGPMap;

- JuniperVlanMap;

- JuniperBaseCompMap;

- JuniperComponentsMap;

- JuniperContentsMap;

- JuniperMICMap;

- community.snmp.LocationMap.

Monitoring Templates (binded):

- Device (/Devices);

- JuniperBaseComp (/Network);

- JuniperContents (/Network);

- JuniperFPC (/Network);

- JuniperMIC (/Network);

- JuniperPIC (/Network);

- JuniperRoutingEngine (/Network).

Now I say you what are my issues:

- I don't view 'SNMP Location' and 'SNMP Contact' in the section 'Overview';

- I don't view 'Device Title'  in the section 'Overview';

- I view empty Graphs of CPU and Memory.

I have attched two screenshots too.

I hope I make clear to let you understand my problems.

Thanks a lot.