I've just installed Umbsearch and everything was going fine I put the search box macro on one page and the results macro on another and when I go to publish them I get the same error within Umbraco.

Do you know what causes this? 

Cheers

Andrew

Method not found: 'Void Lucene.Net.Documents.Document.Add(Lucene.Net.Documents.Field)'.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.MissingMethodException: Method not found: 'Void Lucene.Net.Documents.Document.Add(Lucene.Net.Documents.Field)'.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:

[MissingMethodException: Method not found: 'Void Lucene.Net.Documents.Document.Add(Lucene.Net.Documents.Field)'.] UmbSearch2.Search.Indexer.AddNodeToIndex(CMSNode node, Hashtable fields, Boolean IsMediaItem) +0 UmbSearch2.Search.Indexer.Index(Document node) +534 UmbSearch2.EventHandlers.DocumentIndexer.Document_AfterPublish(Document sender, PublishEventArgs e) +35 umbraco.cms.businesslogic.web.PublishEventHandler.Invoke(Document sender, PublishEventArgs e) +0 umbraco.cms.businesslogic.web.Document.FireAfterPublish(PublishEventArgs e) +27 umbraco.cms.businesslogic.web.Document.PublishWithResult(User u) +1520 umbraco.cms.presentation.editContent.Publish(Object sender, EventArgs e) +236 System.EventHandler.Invoke(Object sender, EventArgs e) +0 umbraco.controls.ContentControl.savePublish(Object Sender, ImageClickEventArgs e) +46 System.Web.UI.WebControls.ImageButton.OnClick(ImageClickEventArgs e) +113 System.Web.UI.WebControls.ImageButton.RaisePostBackEvent(String eventArgument) +120 System.Web.UI.WebControls.ImageButton.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +10 System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13 System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +36 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +5296