Vantage Log In problems

Hi all,

I was wondering if anyone could help me. This morning we have started getting
the error message "The DLC environment variable must contain a valid directory
/ path" when trying to log on to Vantage from client machines or the vantage
server. However we can still log on to Vantage sucessfully via terminal

Has anyone come across this error before or have any idea how to fix it?!

Just prior to noticing this problem I was running MRP in a test database and
recieved a message saying that it had run out of job numbers - if that has
any bearing on things...