Check the properties of each VM in the vApp. When appliances are deployed in vCloud Director (5.5) you will need to fill in the guest properties prior to starting the vApp/VM. If required properties are missing in order to configure the VM, the start up process will fail due to null values.
- Right-click the VM and click Properties.
- Click the "Guest Properties" tab.
- Enter the property requirements for each appliance and click OK.
Once you complete the steps that are highlighted in red for each appliance the vApp should start.