Microsoft JET Database Engine error '80040e4d'

Cannot start your application. The workgroup information file is missing or opened exclusively by another user.

/DaEngine.asp, line 13

---------------------


What does this mean?

------------------------------------
line 12:
--------
Set con = CreateObject("ADODB.Connection")
--------
line 13:
-------
con.Open "PROVIDER='MICROSOFT.JET.OLEDB.4.0';User ID=;Password=; Data Source=employees.mdb;"