Windows Agent installation - GPO, push from console and manual - issues after resintalling

Hi,

I'm distributing the Windows agent via GPO, soand have created the MST and added the GPO software installation. 

The install is pushed out to the organisations PC's - I can see the software being installed.

However, not all agents are appeaing in the Acronis Management Server's web console. One specific agent was already installed and working before I had to remove the management server and resintall to fix an issue with email notifications (i.e. they weren't working).

The MSI transform doesn't seem to be the issue (well, it can't be if some agents are showing up). There are no firewall issues (the previous setup worked - see above - and nothing has changed) - the Windows firewall is disabled on the management server for internal domain communication and I have temporarily disabled the firewall on one of the PC's that's not appearing on the console.

I seem to have three options. 

• Work out what's wrong, if anything, with the existing deployment - can the agent settings (i.e. management server location and credentials) be interogated, i.e are they present in the registry or a settings file on the Windows PC's with the agent installed?
• Re-deploy using a new MST - I presume that any existing settings in the already installed agents would be reset to those in the new transform file? 
• Manual installation on each PC.

I would prefer to push the agent from the management console but that has never worked ("Failed to check credentials for specified account. The network path was not found" using a domain admin account despite ensuring that the PC is configured for remote installation - http://dl.managed-protection.com/u/backup/help/12/user/en-US/index.html…).

Likewise, a manual installation of the agent fails to register on the management server!

I'm getting nowhere. It's driving me nuts!