The following code works fine with executed stand alone, but errors when the
hosted within IE.

The workbook with the VSTO Customization are deployed to a Web Site if the
user opens the workbook with in IE (as opposed to saving the file) the
following code fails. If the file is saved locally the code works.

CODE:

Dim wb As Excel.Workbook =
_workBook.Application.Workbooks.Add(Microsoft.Offi ce.Interop.Excel.XlWBATemplate.xlWBATWorksheet)

ERROR TEXT:

Add method of Workbooks class failed


************** Exception Text **************
System.Runtime.InteropServices.COMException (0x800A03EC): Add method of
Workbooks class failed

Server stack trace:


Exception rethrown at [0]:
at System.Runtime.Remoting.Proxies.RealProxy.HandleRe turnMessage(IMessage
reqMsg, IMessage retMsg)
at System.Runtime.Remoting.Proxies.RealProxy.PrivateI nvoke(MessageData&
msgData, Int32 type)
at Microsoft.Office.Interop.Excel.Workbooks.Add(Objec t Template)
at QuoteDownloadPane.QuoteDownloadPane.GenerateButton _Click(Object
sender, EventArgs e)
at System.Windows.Forms.Control.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnMouseUp(MouseEventAr gs mevent)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons
button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ButtonBase.WndProc(Message& m)
at System.Windows.Forms.Button.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.O nMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.W ndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg,
IntPtr wparam, IntPtr lparam)


************** Loaded Assemblies **************
mscorlib
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.42 (RTM.050727-4200)
CodeBase:
file:///C:/WINDOWS/Microsoft.NET/Framework/v2.0.50727/mscorlib.dll
----------------------------------------
msosec
Assembly Version: 7.0.5000.0
Win32 Version: 7.10.3191.0
CodeBase:
file:///C:/WINDOWS/assembly/GAC/msosec/7.0.5000.0__b03f5f7f11d50a3a/msosec.dll
----------------------------------------
System
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.42 (RTM.050727-4200)
CodeBase:
file:///C:/WINDOWS/assembly/GAC_MSIL/System/2.0.0.0__b77a5c561934e089/System.dll
----------------------------------------
Microsoft.VisualStudio.Tools.Applications.Runtime
Assembly Version: 8.0.0.0
Win32 Version: 8.0.50727.42
CodeBase:
file:///C:/WINDOWS/assembly/GAC_MSIL/Microsoft.VisualStudio.Tools.Applications.Runtime/8.0.0.0__b03f5f7f11d50a3a/Microsoft.VisualStudio.Tools.Applications.Runtime. dll
----------------------------------------
Microsoft.Office.Tools.Common
Assembly Version: 8.0.0.0
Win32 Version: 8.0.50727.42
CodeBase:
file:///C:/WINDOWS/assembly/GAC_MSIL/Microsoft.Office.Tools.Common/8.0.0.0__b03f5f7f11d50a3a/Microsoft.Office.Tools.Common.dll
----------------------------------------
System.Windows.Forms
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.42 (RTM.050727-4200)
CodeBase:
file:///C:/WINDOWS/assembly/GAC_MSIL/System.Windows.Forms/2.0.0.0__b77a5c561934e089/System.Windows.Forms.dll
----------------------------------------
System.Xml
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.42 (RTM.050727-4200)
CodeBase:
file:///C:/WINDOWS/assembly/GAC_MSIL/System.Xml/2.0.0.0__b77a5c561934e089/System.Xml.dll
----------------------------------------
Combined
Assembly Version: 1.0.0.0
Win32 Version: n/a
CodeBase:
http://fti2k3tstop1.ftimis.com/QTETe...3/Combined.DLL
----------------------------------------
Microsoft.Office.Tools.Excel
Assembly Version: 8.0.0.0
Win32 Version: 8.0.50727.42
CodeBase:
file:///C:/WINDOWS/assembly/GAC_MSIL/Microsoft.Office.Tools.Excel/8.0.0.0__b03f5f7f11d50a3a/Microsoft.Office.Tools.Excel.dll
----------------------------------------
Microsoft.Office.Interop.Excel
Assembly Version: 11.0.0.0
Win32 Version: 11.0.5530
CodeBase:
file:///C:/WINDOWS/assembly/GAC/Microsoft.Office.Interop.Excel/11.0.0.0__71e9bce111e9429c/Microsoft.Office.Interop.Excel.dll
----------------------------------------
office
Assembly Version: 11.0.0.0
Win32 Version: 11.0.5530
CodeBase:
file:///C:/WINDOWS/assembly/GAC/office/11.0.0.0__71e9bce111e9429c/office.dll
----------------------------------------
System.Data
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.42 (RTM.050727-4200)
CodeBase:
file:///C:/WINDOWS/assembly/GAC_32/System.Data/2.0.0.0__b77a5c561934e089/System.Data.dll
----------------------------------------
QuoteDownloadPane
Assembly Version: 1.0.0.1
Win32 Version: n/a
CodeBase:
http://fti2k3tstop1.ftimis.com/QTETe...wnloadPane.DLL
----------------------------------------
Microsoft.VisualBasic
Assembly Version: 8.0.0.0
Win32 Version: 8.0.50727.42 (RTM.050727-4200)
CodeBase:
file:///C:/WINDOWS/assembly/GAC_MSIL/Microsoft.VisualBasic/8.0.0.0__b03f5f7f11d50a3a/Microsoft.VisualBasic.dll
----------------------------------------
System.Drawing
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.42 (RTM.050727-4200)
CodeBase:
file:///C:/WINDOWS/assembly/GAC_MSIL/System.Drawing/2.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll
----------------------------------------
Accessibility
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.42 (RTM.050727-4200)
CodeBase:
file:///C:/WINDOWS/assembly/GAC_MSIL/Accessibility/2.0.0.0__b03f5f7f11d50a3a/Accessibility.dll
----------------------------------------
Microsoft.Vbe.Interop
Assembly Version: 11.0.0.0
Win32 Version: 11.0.5530
CodeBase:
file:///C:/WINDOWS/assembly/GAC/Microsoft.Vbe.Interop/11.0.0.0__71e9bce111e9429c/Microsoft.Vbe.Interop.dll
----------------------------------------