Database connection problem

Getting a confusing error - anyone understand? Has it happened to you too? "DB Error: not found";s:8:"userinfo";s:41:"Unable to include the DB/.php file for `'";s:8:"callback";N;}} The DB/ .php is the wrong filename - because there isn't one - we know that something isn't being included that should be but don't know why Steve Steve Fisk Web Application Developer KOA Solutions Ltd Tel : 01925 758229 FAX : 01925 758023 This message is confidential. Unless you are the named addressee or their delegated representative you may not use, disclose, or copy the contents of the e-mail. If you are not the named addressee please notify the sender immediately and delete the material from your computer. Any views or opinions contained in this e-mail are solely those of the author unless expressly stated otherwise