Status: Koha 2.2.9 Installed on a Windows platform. When I use the search funtion with both amicu and loc ticked, I get the following error message. <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN"><html><head> <title>500 Internal Server Error</title> </head><body> <h1>Internal Server Error</h1> <p>The server encountered an internal error or misconfiguration and was unable to complete your request.</p> <p>Please contact the server administrator, webmaster@dummy-opac and inform them of the time the error occurred, and anything you might have done that may have caused the error.</p> <p>More information about this error may be available in the server error log.</p> </body></html> 2. If I only use amicus (i.e. untick loc) I am able to get a return, but not for the specific ISBN. A general title, Introduction to teaching, Principles and practice, yields results. It is just not the book I am looking for. And this 'success' is erratic. Sometimes I only get a result - Ignored: for a well known fiction - Huckleberry Finn, or Jane Eyre. In Malawi, we have a working group trying to help each other, and I know Z39.50 works on Windows. Late in one workshop, we put in "Malawi's lost Decade" and presto - biblio was there!!! I have added two other z39.50 targets, one a voyager data base (Monash Uni), the other an ADVANCE data base(Griffith Uni). Could it be that I have stuffed up something in configuration so that only the NL(amicus) database works? Thanks for listening, Carmel.