Unable to add a virtual vault to a user

When logging in as anyt user on test machine I am unable to enable the virtual vault following a successful download of the vault cache. The error message is - Enterprise Vault could not add or remove the following Virtual Vaults: UserName Try again later. _______ This is similar to article - http://support.veritas.com/docs/336989 (Virtual Vault fails to launch as the application cannot locate the MAPI provider information for the information store) However the article suggests that a client trace will show up - [1528] Could not create an instance of Virtual Vault. Verify that EVMSP is correctly configured in MAPISVC.INF: 0x8004010F [1528] ~EVMSPConfig::AddEVMSPService: 0x8004010F However mine doesnt and the workarounds dont work for me: Workaround: Option 1 The locale must be the same for Outlook, Virtual Vault and the Operating System. Option 2 Add the user account that is accessing Virtual Vault 'Power User' rights to the locale folder path. (For example, a Dutch locale path would be c:\program files\Common Files\System\MSMAPI\1043) I can confirm the locales are all the same although this was working for this user until I upgraded to Outlook 2007 from 2003 and reset the vault cache. Any help much appreciated. Regards,