Server Error in '/' Application.
Object reference not set to an instance of an object.
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.NullReferenceException: Object reference not set to an instance of an object.

Source Error:
The source code that generated this unhandled exception can only be shown when compiled in debug mode. To enable this, please follow one of the below steps, then request the URL:

1. Add a "Debug=true" directive at the top of the file that generated the error. Example:

  <%@ Page Language="C#" Debug="true" %>

or:

2) Add the following section to the configuration file of your application:

<configuration>
   <system.web>
       <compilation debug="true"/>
   </system.web>
</configuration>

Note that this second technique will cause all files within a given application to be compiled in debug mode. The first technique will cause only that particular file to be compiled in debug mode.

Important: Running applications in debug mode does incur a memory/performance overhead. You should make sure that an application has debugging disabled before deploying into production scenario.


Stack Trace:

[NullReferenceException: Object reference not set to an instance of an object.]
   YAF.Classes.Config.get_ConnectionString() +25
   YAF.Classes.Data.YafDBConnManager.InitConnection() +90
   YAF.Classes.Data.DB.system_initialize_fixaccess(Boolean grant) +50
   YAF.Install._default.UpgradeDatabase(Boolean fullText) +46
   YAF.Install._default.Wizard_NextButtonClick(Object sender, WizardNavigationEventArgs e) +537
   System.Web.UI.WebControls.Wizard.OnNextButtonClick(WizardNavigationEventArgs e) +108
   System.Web.UI.WebControls.Wizard.OnBubbleEvent(Object source, EventArgs e) +418
   System.Web.UI.WebControls.WizardChildTable.OnBubbleEvent(Object source, EventArgs args) +19
   System.Web.UI.Control.RaiseBubbleEvent(Object source, EventArgs args) +37
   System.Web.UI.WebControls.Button.OnCommand(CommandEventArgs e) +118
   System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +166
   System.Web.UI.WebControls.Button.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) +1565

FILE:
mssql/tables.sql

ERROR:
Разрешение CREATE TABLE запрещено в базе данных "master".

STATEMENT:
/* Version 1.0.2 */

/*
** Create missing tables
*/

/* Create Thanks Table */
if not exists (select 1 from sysobjects where id = object_id(N'[dbo].[yaf_Thanks]') and OBJECTPROPERTY(id, N'IsUserTable') = 1)
CREATE TABLE [dbo].[yaf_Thanks](
[ThanksID] [int] IDENTITY(1,1) NOT NULL,
[ThanksFromUserID] [int] NOT NULL,
[ThanksToUserID] [int] NOT NULL,
[MessageID] [int] NOT NULL,
[ThanksDate] [smalldatetime] NOT NULL
)
Описание: Необработанное исключение при выполнении текущего веб-запроса. Изучите трассировку стека для получения дополнительных сведений о данной ошибке и о вызвавшем ее фрагменте кода

<connectionStrings>
<add name="yafnet" connectionString="Data Source=(local);Initial Catalog=;Integrated Security=True" />
</connectionStrings>