I have created a solution package for Sharepoint 2007 and have installed and deployed it on a development server.  However, when I go to activate it through Site Features, I'm given a lovely page of an error stack: 

    Cannot insert the value NULL into column 'Assembly', table 'wss_content_rginfonet_bodsp2007app1.dbo.EventReceivers'; column does not allow nulls. INSERT fails. 
    Cannot insert the value NULL into column 'Assembly', table 'wss_content_rginfonet_bodsp2007app1.dbo.EventReceivers'; column does not allow nulls. INSERT fails. 
    The statement has been terminated. 
    The statement has been terminated.   at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection) 
       at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection) 
       at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj) 
       at System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj) 
       at System.Data.SqlClient.SqlCommand.RunExecuteNonQueryTds(String methodName, Boolean async) 
       at System.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(DbAsyncResult result, String methodName, Boolean sendToPipe) 
       at System.Data.SqlClient.SqlCommand.ExecuteNonQuery() 
       at Microsoft.SharePoint.Utilities.SqlSession.ExecuteNonQuery(SqlCommand command) 
       at Microsoft.SharePoint.Administration.SPElementDefinitionCollection.ProvisionContentTypeAndEventReceiverBindings(SPFeaturePropertyCollection props, SPSite site, SPWeb web, Boolean fForce) 
       at Microsoft.SharePoint.Administration.SPElementDefinitionCollection.ProvisionElements(SPFeaturePropertyCollection props, SPWebApplication webapp, SPSite site, SPWeb web, Boolean fForce) 
       at Microsoft.SharePoint.SPFeature.ProvisionElements(SPFeaturePropertyCollection props, SPWebApplication webapp, SPSite site, SPWeb web, Boolean fForce) 
       at Microsoft.SharePoint.SPFeature.Activate(SPSite siteParent, SPWeb webParent, SPFeaturePropertyCollection props, Boolean fForce) 
       at Microsoft.SharePoint.SPFeatureCollection.AddInternal(Guid featureId, SPFeaturePropertyCollection properties, Boolean force, Boolean fMarkOnly) 
       at Microsoft.SharePoint.SPFeatureCollection.Add(Guid featureId) 
       at Microsoft.SharePoint.WebControls.FeatureActivator.BtnActivateFeature_Click(Object objSender, EventArgs evtargs) 
       at System.Web.UI.WebControls.Button.OnClick(EventArgs e) 
       at System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) 
       at System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) 
       at System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) 
       at System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) 
       at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)

 

I'm not quite sure how to decipher this, but from my understanding it's saying that the application is attempting to insert a NULL event receiver into the event receivers table. Any help is greatly appreciated as usual! 

Cheers~

Elements.xml (renamed to ListManifest.xml):

    <?xml version="1.0" encoding="utf-8" ?>
    <Elements xmlns="http://schemas.microsoft.com/sharepoint/">
        <Receivers ListTemplateId="101">
            <Receiver>
                <Name>AddedEventHandler</Name>
                <Type>ItemAdded</Type>
                <SequenceNumber>10000</SequenceNumber>
                <Class>ChangeContentTypeEventHandler.ChangeContentTypeEventHandler</Class>
                <Data></Data>
                <Filter></Filter>
            </Receiver>
        </Receivers>
    </Elements>

manifest.xml: 

    <?xml version="1.0" encoding="utf-8"?>
    <Solution xmlns="http://schemas.microsoft.com/sharepoint/"
      SolutionId="F9850E13-81B6-47E1-BBC6-42AC70A903C3" >
        <FeatureManifests>
            <FeatureManifest Location="List\Feature.xml"/>
        </FeatureManifests>
        <Assemblies>
           <Assembly DeploymentTarget="GlobalAssemblyCache"     Location="ChangeContentTypeEventHandler.dll"/>
        </Assemblies>
    </Solution>

deploy.ddf: 

    .OPTION Explicit ; Generate errors
    .Set DiskDirectory1="..\bin"
    .Set CabinetNameTemplate="ChangeContentTypeEventHandler.wsp"
   
    manifest.xml
    .Set DestinationDir="List\ListTemplates"
    List\ListTemplates\ListManifest.xml ; specify cab file name
    .Set DestinationDir="List\Messages"
    List\Messages\schema.xml
    .Set DestinationDir="List"
    List\Feature.xml
    .Set DestinationDir=. 
    ..\bin\ChangeContentTypeEventHandler.dll ChangeContentTypeEventHandler.dll