SEHException was unhandled

I have a vs2010 c# solution that was working fine yesterday.

When I try and run a debug instance today I keep getting an SEHException was unhandled.

This error is being thrown in the InitializeComponent method of the startup form.

Any Ideas?

Here's the stacktrace:

System.Runtime.InteropServices.SEHException was unhandled
  Message=External component has thrown an exception.
  Source=System.Drawing
  ErrorCode=-2147467259
  StackTrace:
       at System.Drawing.SafeNativeMethods.Gdip.GdipCreateFontFromLogfontW(HandleRef hdc, Object lf, IntPtr& font)
       at System.Drawing.Font.FromLogFont(Object lf, IntPtr hdc)
       at System.Drawing.Font.FromHfont(IntPtr hfont)
       at System.Drawing.SystemFonts.get_DefaultFont()
       at System.Windows.Forms.Control.get_DefaultFont()
       at System.Windows.Forms.Control.GetDefaultFontHandleWrapper()
       at System.Windows.Forms.Control.get_FontHandle()
       at System.Windows.Forms.ContainerControl.GetFontAutoScaleDimensions()
       at System.Windows.Forms.ContainerControl.get_CurrentAutoScaleDimensions()
       at System.Windows.Forms.ContainerControl.get_AutoScaleFactor()
       at System.Windows.Forms.ContainerControl.PerformAutoScale(Boolean includedBounds, Boolean excludedBounds)
       at System.Windows.Forms.ContainerControl.PerformNeededAutoScaleOnLayout()
       at System.Windows.Forms.Form.OnLayout(LayoutEventArgs levent)
       at System.Windows.Forms.Control.PerformLayout(LayoutEventArgs args)
       at System.Windows.Forms.Control.System.Windows.Forms.Layout.IArrangedElement.PerformLayout(IArrangedElement affectedElement, String affectedProperty)
       at System.Windows.Forms.ContainerControl.LayoutScalingNeeded()
       at System.Windows.Forms.ContainerControl.set_AutoScaleMode(AutoScaleMode value)
       at FirstWindow.Form1.InitializeComponent() in C:\Users\Ash\Documents\Visual Studio 2010\Projects\FrameworkClientV2 - No Security\FirstWindow\Form1.designer.cs:line 32
       at FirstWindow.Form1..ctor() in C:\Users\Ash\Documents\Visual Studio 2010\Projects\FrameworkClientV2 - No Security\FirstWindow\Form1.cs:line 27
       at FirstWindow.Program.Main() in C:\Users\Ash\Documents\Visual Studio 2010\Projects\FrameworkClientV2 - No Security\FirstWindow\Program.cs:line 18
       at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
       at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
       at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
       at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
       at System.Threading.ThreadHelper.ThreadStart()
  InnerException: 

On a random note my gf broke my laptop screen last night so Im running on an external monitor... could this have anything to do with it?

Here's the code and the erroneous line..

private void InitializeComponent()
{
    this.components = new System.ComponentModel.Container();
    ///////////////////The line below throws the exception
    this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
    /////////////////////////////// 
    this.Text = "Form1";
}