I'm trying to have a pop-up explanation appear when a user tries to save a blocked file.  So if I try to save a .jpeg to my Home Directory, it'll alert me that this is a restricted file and cannot be done.  I have it set up in Vault and although it's not allowing me to save a .jpeg to the restricted location, it is not alerting of this using the message I entered in the Vault notification screen.  Instead it says the file name is too long and won't allow me to save it.  Any suggestions?  Vault says it uses the Messenger Service but we have Windows 7 which doesn't have that service.