BTB error

[asasinuxp]

This morning, when I opened BTB I received the following error:Index was out of range.Must be non-negative and less than the size of the collection.Parameter name:index. This is the details:

See the end of this message for details on invoking 
just-in-time (JIT) debugging instead of this dialog box.

************** Exception Text **************
System.ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index
   at System.ThrowHelper.ThrowArgumentOutOfRangeException(ExceptionArgument argument, ExceptionResource resource)
   at System.ThrowHelper.ThrowArgumentOutOfRangeException()
   at System.Collections.Generic.List`1.get_Item(Int32 index)
   at BobsBits.SObjectPiece.LoadFromBinary(BinReader br)
   at BobsBits.SObjectPieces.LoadFromBinary(BinReader br)
   at BobsBits.SObject.LoadFromBinary(BinReader br)
   at BobsBits.SObjectInstance.LoadFromBinary(BinReader br)
   at BobsBits.SObjectInstances.LoadFromBinary(BinReader br)
   at BobsBits.Venue.LoadFromBinary(String ProjectFolder, String Filename, Boolean ForAnUndo, String& ErrorMessage)
   at BobsTrackBuilder.frmMain.(String , String , Boolean )
   at BobsTrackBuilder.frmMain.(Object , EventArgs )
   at System.Windows.Forms.MenuItem.OnClick(EventArgs e)
   at System.Windows.Forms.MenuItem.MenuItemData.Execute()
   at System.Windows.Forms.Command.Invoke()
   at System.Windows.Forms.Command.DispatchID(Int32 id)
   at System.Windows.Forms.Control.WmCommand(Message& m)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
   at System.Windows.Forms.ContainerControl.WndProc(Message& m)
   at System.Windows.Forms.Form.WndProc(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.WndProc(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: 2.0.50727.4952 (win7RTMGDR.050727-4900)
    CodeBase: file:///C:/Windows/Microsoft.NET/Framework/v2.0.50727/mscorlib.dll
----------------------------------------
BobsTrackBuilderEvo
    Assembly Version: 0.8.0.1
    Win32 Version: 0.8.0.1
    CodeBase: file:///D:/Program%20Files%20(x86)/BobsTrackBuilderEvo/BobsTrackBuilderEvo.exe
----------------------------------------
BobsBits
    Assembly Version: 1.1.1.5
    Win32 Version: 1.1.1.5
    CodeBase: file:///D:/Program%20Files%20(x86)/BobsTrackBuilderEvo/BobsBits.DLL
----------------------------------------
Microsoft.DirectX
    Assembly Version: 1.0.2902.0
    Win32 Version: 5.04.00.2904
    CodeBase: file:///C:/Windows/assembly/GAC/Microsoft.DirectX/1.0.2902.0__31bf3856ad364e35/Microsoft.DirectX.dll
----------------------------------------
System.Windows.Forms
    Assembly Version: 2.0.0.0
    Win32 Version: 2.0.50727.4927 (NetFXspW7.050727-4900)
    CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Windows.Forms/2.0.0.0__b77a5c561934e089/System.Windows.Forms.dll
----------------------------------------
System
    Assembly Version: 2.0.0.0
    Win32 Version: 2.0.50727.4927 (NetFXspW7.050727-4900)
    CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System/2.0.0.0__b77a5c561934e089/System.dll
----------------------------------------
System.Drawing
    Assembly Version: 2.0.0.0
    Win32 Version: 2.0.50727.4927 (NetFXspW7.050727-4900)
    CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Drawing/2.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll
----------------------------------------
System.Xml
    Assembly Version: 2.0.0.0
    Win32 Version: 2.0.50727.4927 (NetFXspW7.050727-4900)
    CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Xml/2.0.0.0__b77a5c561934e089/System.Xml.dll
----------------------------------------
Microsoft.DirectX.Direct3D
    Assembly Version: 1.0.2902.0
    Win32 Version: 9.05.132.0000
    CodeBase: file:///C:/Windows/assembly/GAC/Microsoft.DirectX.Direct3D/1.0.2902.0__31bf3856ad364e35/Microsoft.DirectX.Direct3D.dll
----------------------------------------
Microsoft.DirectX.Direct3DX
    Assembly Version: 1.0.2911.0
    Win32 Version: 9.12.589.0000
    CodeBase: file:///C:/Windows/assembly/GAC/Microsoft.DirectX.Direct3DX/1.0.2911.0__31bf3856ad364e35/Microsoft.DirectX.Direct3DX.dll
----------------------------------------
Microsoft.VisualC
    Assembly Version: 8.0.0.0
    Win32 Version: 8.00.50727.4927
    CodeBase: file:///C:/Windows/assembly/GAC_MSIL/Microsoft.VisualC/8.0.0.0__b03f5f7f11d50a3a/Microsoft.VisualC.dll
----------------------------------------
ICSharpCode.SharpZipLib
    Assembly Version: 0.85.5.452
    Win32 Version: 0.85.5.452
    CodeBase: file:///D:/Program%20Files%20(x86)/BobsTrackBuilderEvo/ICSharpCode.SharpZipLib.DLL
----------------------------------------

************** JIT Debugging **************
To enable just-in-time (JIT) debugging, the .config file for this
application or computer (machine.config) must have the
jitDebugging value set in the system.windows.forms section.
The application must also be compiled with debugging
enabled.

For example:

<configuration>
    <system.windows.forms jitDebugging="true" />
</configuration>

When JIT debugging is enabled, any unhandled exception
will be sent to the JIT debugger registered on the computer
rather than be handled by this dialog box.

I cannot use the back-up from temporary files,the last file has date 26.11.2010,but since then I worked every day on my track.If I will attach the Venue.bin from my project folder,can someone has to figure out what is wrong?