Error in executing a build. Failed to create the cache folder path

Hi,

     While trying to execute a newly created BuildType, I get an error that TS failed to create the cache folder as the cache folder path is invalid. Now, the cache path that TS is trying to create is derived from the servcie account that it uses. My company has a policy of creating service accounts on domains that are prefixed by a $ symbol. e.g. $MyTFSServiceAcct. Although, Windows has no problem creating the $MyTFSServiceAcct folder under C:\Documents and Settings folder, TFS seems to think that the path is invalid.

Do you guys know anything about this? Or can I specify an alternate cache folder for TFS to use?

My setup details:

VSTS RC fresh install, Single Server TFS deployment, on a domain, Team Build installed on the same machine as TFS.

Any help will be greatly appreciated.

Thanks,