Project Server 2007 : Queue system could not start
If your project server 2007 deployment use a different account for the farm service and Shared Service Provider (SSP), you might face some problem with the Project Server Queue Service.
By default, the Project Server Queue Service run under the account that is used for the farm service. If your queue job cannot be processed and you see the following message in Event Viewer :
Queue system could not start. SSP: {guid}.
Try change the Project Server Queue Service account to the one that is used to run the Shared Service Provider.
Go to Services and change the Microsoft Office Project Server Queue Service service account to the account that is used to run the SSP.