При инсталяции форума на шаге "Installation Wizard" жму "next" и получаю вот такую ошибку:

 

Object cannot be cast from DBNull to other types.

Server Error in '/Forum' Application.

---

Object cannot be cast from DBNull to other types.

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.InvalidCastException: Object cannot be cast from DBNull to other types.

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:

[InvalidCastException: Object cannot be cast from DBNull to other types.]
   System.DBNull.System.IConvertible.ToUInt16(IFormatProvider provider) +56
   System.Convert.ToUInt16(Object value) +28
   YAF.Classes.Data.DB.SqlServerMajorVersionAsShort() +79
   YAF.Classes.Data.DB.system_initialize_executescripts(String script, String scriptFile, Boolean useTransactions) +77
   YAF.Install._default.ExecuteScript(String scriptFile, Boolean useTransactions) +240
   YAF.Install._default.UpgradeDatabase(Boolean fullText) +74
   YAF.Install._default.Wizard_NextButtonClick(Object sender, WizardNavigationEventArgs e) +976
   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

---

Version Information: Microsoft .NET Framework Version:2.0.50727.3603; ASP.NET Version:2.0.50727.3614

После компиляции с изменениями получилась вот такая ошибка. С этим что нить можно поделать?

 

Server Error in '/Forum' Application.
--------------------------------------------------------------------------------

FILE:
mssql/indexes.sql

ERROR:
Invalid object name 'sys.indexes'.

STATEMENT:
-- yaf_Thanks

IF NOT EXISTS (SELECT * FROM sys.indexes WHERE object_id = OBJECT_ID(N'[dbo].[yaf_Thanks]') AND name = N'IX_yaf_Thanks_MessageID')
CREATE  INDEX [IX_yaf_Thanks_MessageID] ON [dbo].[yaf_Thanks]
(
[MessageID] ASC
)
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.Exception: FILE:
mssql/indexes.sql

ERROR:
Invalid object name 'sys.indexes'.

STATEMENT:
-- yaf_Thanks

IF NOT EXISTS (SELECT * FROM sys.indexes WHERE object_id = OBJECT_ID(N'[dbo].[yaf_Thanks]') AND name = N'IX_yaf_Thanks_MessageID')
CREATE  INDEX [IX_yaf_Thanks_MessageID] ON [dbo].[yaf_Thanks]
(
[MessageID] ASC
)

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:


[Exception: FILE:
mssql/indexes.sql

ERROR:
Invalid object name 'sys.indexes'.

STATEMENT:
-- yaf_Thanks

IF NOT EXISTS (SELECT * FROM sys.indexes WHERE object_id = OBJECT_ID(N'[dbo].[yaf_Thanks]') AND name = N'IX_yaf_Thanks_MessageID')
CREATE  INDEX [IX_yaf_Thanks_MessageID] ON [dbo].[yaf_Thanks]
(
    [MessageID] ASC
)]
   YAF.Classes.Data.DB.system_initialize_executescripts(String script, String scriptFile, Boolean useTransactions) in C:\inetpub\wwwroot\YAF-v1.9.4-FINAL-SRC\YAF.Classes\YAF.Classes.Data\DB.cs:8992
   YAF.Install._default.ExecuteScript(String scriptFile, Boolean useTransactions) in C:\inetpub\wwwroot\YAF-v1.9.4-FINAL-SRC\YetAnotherForum.NET\install\default.aspx.cs:1377
   YAF.Install._default.UpgradeDatabase(Boolean fullText) in C:\inetpub\wwwroot\YAF-v1.9.4-FINAL-SRC\YetAnotherForum.NET\install\default.aspx.cs:1005
   YAF.Install._default.Wizard_NextButtonClick(Object sender, WizardNavigationEventArgs e) in C:\inetpub\wwwroot\YAF-v1.9.4-FINAL-SRC\YetAnotherForum.NET\install\default.aspx.cs:632
   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