Hi Richard, I created a new issue for this (https://issues.apache.org/jira/browse/LUCENENET-413) and prepared patches.
I also committed the patch for 2.9.4g(LUCENENET-412). (https://svn.apache.org/repos/asf/incubator/lucene.net/branches/Lucene.Net_2 _9_4g) DIGY -----Original Message----- From: Richard Wilde [mailto:rich...@wildesoft.net] Sent: Monday, May 02, 2011 11:07 AM To: lucene-net-user@lucene.apache.org Subject: RE: [Lucene.Net] Medium trust security issue I am trying to compile lucene 2.9.2 for .net 4.0 but when I run my web application I get:- "Inheritance security rules violated while overriding member: 'Lucene.Net.Util.Parameter.GetRealObject(System.Runtime.Serialization.Stream ingContext)'. Security accessibility of the overriding method must match the security accessibility of the method being override" Is this a known issue? Thanks Richard