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~