Unhandled Error

This is a SQL Server problem which is being captured and reported to you by DNN.  The SQL Server is basically telling you that it is out of space and DNN, rather than crashing, is saying it cannot add an event to the EventLog.  This will have to be handled by going directly to the DB to resolve the problem.  Suspect items might be the DB logging type (I recommend simple, unless you are dealing with very sensitive or ecommerce data), something runaway which is filling your EventLog (select count(*) from EventLog) or simply too tight a constraint on the db size itself.

Scott Willhite, Co-Founder DNN