K2 Studio - Object reference not set to an instance of an object

All,

I have installed K2 Studio on my laptop and trying to open an exisitng workflow. When I open the worflow, I get the error message shown below. I open the same workflow from another machine and got the same problem. Looks like this is specific to the workflow. Any idea how I can resolve this?

==========

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

************** Exception Text **************
System.NullReferenceException: Object reference not set to an instance of an object.
   at SourceCode.Framework.SerializationInfo2.Load(PersistableObject instance, XmlReader reader)
   at SourceCode.Framework.SerializationInfoProvider.Load(PersistableObject instance, XmlReader reader)
   at SourceCode.Framework.SerializationInfoProvider.Load(TextReader reader)
   at SourceCode.ProjectSystem.ProjectFile.Open(TextReader reader)
   at SourceCode.ProjectSystem.ProjectFile.Open(Boolean showDesigner)
   at SourceCode.ProjectSystem.ProjectFile.Open()
   at SourceCode.K2Studio.Processes.KprxFileType.Create(Project project, ProjectFile projectfile)
   at SourceCode.K2Studio.Processes.KprxFileTypeHandler.OpenProjectItem(ProjectFile projectFile)
   at SourceCode.K2Studio.K2Studio.ActivateProjectItem(Object sender, TreeNode iNode, IPlugin plugin)
   at SourceCode.K2Studio.K2Studio.ApplicationManager_ItemCreated(Object sender, EventArgs e)
   at SourceCode.K2Studio.K2ApplicationManager.Open(String Path)
   at SourceCode.K2Studio.K2Studio.RecentMenuItem_Click(Object sender, EventArgs e)
   at ComponentFactory.Krypton.Ribbon.KryptonRibbonRecentDoc.OnClick(EventArgs e)
   at ComponentFactory.Krypton.Ribbon.KryptonRibbonRecentDoc.PerformClick()
   at ga.g()
   at ga.a(Control A_0, Point A_1, MouseButtons A_2)
   at ComponentFactory.Krypton.Toolkit.ViewBase.MouseUp(Point pt, MouseButtons button)
   at ComponentFactory.Krypton.Toolkit.ViewBase.MouseUp(Point pt, MouseButtons button)
   at ComponentFactory.Krypton.Toolkit.ViewBase.MouseUp(Point pt, MouseButtons button)
   at ComponentFactory.Krypton.Toolkit.ViewManager.MouseUp(MouseEventArgs e, Point rawPt)
   at ComponentFactory.Krypton.Toolkit.VisualPopup.OnMouseUp(MouseEventArgs e)
   at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
   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 ComponentFactory.Krypton.Toolkit.VisualPopup.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: 2.0.50727.3607 (GDR.050727-3600)
    CodeBase: file:///c:/WINDOWS/Microsoft.NET/Framework/v2.0.50727/mscorlib.dll
----------------------------------------
K2Studio
    Assembly Version: 4.0.0.0
    Win32 Version: 4.10060.1.0
    CodeBase: file:///C:/Program%20Files/K2%20blackpearl/K2Studio/K2Studio.exe
----------------------------------------
System.Windows.Forms
    Assembly Version: 2.0.0.0
    Win32 Version: 2.0.50727.3053 (netfxsp.050727-3000)
    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: 2.0.50727.3053 (netfxsp.050727-3000)
    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: 2.0.50727.3053 (netfxsp.050727-3000)
    CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Drawing/2.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll
----------------------------------------
SourceCode.K2Studio.Common
    Assembly Version: 4.0.0.0
    Win32 Version: 4.10060.1.0
    CodeBase: file:///C:/Program%20Files/K2%20blackpearl/K2Studio/SourceCode.K2Studio.Common.DLL
----------------------------------------
ComponentFactory.Krypton.Toolkit
    Assembly Version: 3.5.2.0
    Win32 Version: 3.5.2.0
    CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/ComponentFactory.Krypton.Toolkit/3.5.2.0__a87e673e9ecb6e8e/ComponentFactory.Krypton.Toolkit.dll
----------------------------------------
SourceCode.Framework
    Assembly Version: 4.0.0.0
    Win32 Version: 4.10060.1.0
    CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/SourceCode.Framework/4.0.0.0__16a2c5aaaa1b130d/SourceCode.Framework.dll
----------------------------------------
PresentationFramework
    Assembly Version: 3.0.0.0
    Win32 Version: 3.0.6920.1500 built by: QFE
    CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/PresentationFramework/3.0.0.0__31bf3856ad364e35/PresentationFramework.dll
----------------------------------------
WindowsBase
    Assembly Version: 3.0.0.0
    Win32 Version: 3.0.6920.1427 built by: SP
    CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/WindowsBase/3.0.0.0__31bf3856ad364e35/WindowsBase.dll
----------------------------------------
PresentationCore
    Assembly Version: 3.0.0.0
    Win32 Version: 3.0.6920.1427 built by: SP
    CodeBase: file:///C:/WINDOWS/assembly/GAC_32/PresentationCore/3.0.0.0__31bf3856ad364e35/PresentationCore.dll
----------------------------------------
SourceCode.K2Studio.Resources
    Assembly Version: 4.0.0.0
    Win32 Version: 4.10060.1.0
    CodeBase: file:///C:/Program%20Files/K2%20blackpearl/K2Studio/SourceCode.K2Studio.Resources.DLL
----------------------------------------
System.Xml
    Assembly Version: 2.0.0.0
    Win32 Version: 2.0.50727.3082 (QFE.050727-3000)
    CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Xml/2.0.0.0__b77a5c561934e089/System.Xml.dll
----------------------------------------
System.Web.Services
    Assembly Version: 2.0.0.0
    Win32 Version: 2.0.50727.3053 (netfxsp.050727-3000)
    CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Web.Services/2.0.0.0__b03f5f7f11d50a3a/System.Web.Services.dll
----------------------------------------
System.Configuration
    Assembly Version: 2.0.0.0
    Win32 Version: 2.0.50727.3053 (netfxsp.050727-3000)
    CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Configuration/2.0.0.0__b03f5f7f11d50a3a/System.Configuration.dll
----------------------------------------
mg4rg3yl
    Assembly Version: 4.0.0.0
    Win32 Version: 2.0.50727.3053 (netfxsp.050727-3000)
    CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System/2.0.0.0__b77a5c561934e089/System.dll
----------------------------------------
SourceCode.K2Studio.Environment
    Assembly Version: 4.0.0.0
    Win32 Version: 4.10060.1.0
    CodeBase: file:///C:/Program%20Files/K2%20blackpearl/K2Studio/SourceCode.K2Studio.Environment.DLL
----------------------------------------
System.Design
    Assembly Version: 2.0.0.0
    Win32 Version: 2.0.50727.3053 (netfxsp.050727-3000)
    CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Design/2.0.0.0__b03f5f7f11d50a3a/System.Design.dll
----------------------------------------
SourceCode.Workflow.WizardFramework
    Assembly Version: 4.0.0.0
    Win32 Version: 4.10060.1.0
    CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/SourceCode.Workflow.WizardFramework/4.0.0.0__16a2c5aaaa1b130d/SourceCode.Workflow.WizardFramework.dll
----------------------------------------
SourceCode.Workflow.Plugins
    Assembly Version: 4.0.0.0
    Win32 Version: 4.10060.1.0
    CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/SourceCode.Workflow.Plugins/4.0.0.0__16a2c5aaaa1b130d/SourceCode.Workflow.Plugins.dll
----------------------------------------
SourceCode.Workflow.Design
    Assembly Version: 4.0.0.0
    Win32 Version: 4.10060.1.0
    CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/SourceCode.Workflow.Design/4.0.0.0__16a2c5aaaa1b130d/SourceCode.Workflow.Design.dll
----------------------------------------
SourceCode.Workflow.Authoring
    Assembly Version: 4.0.0.0
    Win32 Version: 4.10060.1.0
    CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/SourceCode.Workflow.Authoring/4.0.0.0__16a2c5aaaa1b130d/SourceCode.Workflow.Authoring.dll
----------------------------------------
SourceCode.ResolverFramework
    Assembly Version: 4.0.0.0
    Win32 Version: 4.10020.1.4223
    CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/SourceCode.ResolverFramework/4.0.0.0__16a2c5aaaa1b130d/SourceCode.ResolverFramework.dll
----------------------------------------
SourceCode.SmartObjects.Client
    Assembly Version: 4.0.0.0
    Win32 Version: 4.10060.1.0
    CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/SourceCode.SmartObjects.Client/4.0.0.0__16a2c5aaaa1b130d/SourceCode.SmartObjects.Client.dll
----------------------------------------
SourceCode.Workflow.Functions.Wizard
    Assembly Version: 4.0.0.0
    Win32 Version: 4.10060.1.0
    CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/SourceCode.Workflow.Functions.Wizard/4.0.0.0__16a2c5aaaa1b130d/SourceCode.Workflow.Functions.Wizard.dll
----------------------------------------
SourceCode.EnvironmentSettings.Client
    Assembly Version: 4.0.0.0
    Win32 Version: 4.10020.1.4223
    CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/SourceCode.EnvironmentSettings.Client/4.0.0.0__16a2c5aaaa1b130d/SourceCode.EnvironmentSettings.Client.dll
----------------------------------------
SourceCode.HostClientAPI
    Assembly Version: 4.0.0.0
    Win32 Version: 4.10020.1.4223
    CodeBase: file:///C:/WINDOWS/assembly/GAC_32/SourceCode.HostClientAPI/4.0.0.0__16a2c5aaaa1b130d/SourceCode.HostClientAPI.dll
----------------------------------------
msvcm90
    Assembly Version: 9.0.30729.1
    Win32 Version: 9.00.30729.1
    CodeBase: file:///C:/WINDOWS/WinSxS/x86_Microsoft.VC90.CRT_1fc8b3b9a1e18e3b_9.0.30729.1_x-ww_6f74963e/msvcm90.dll
----------------------------------------
SourceCode.Security.UserRoleManager.Client
    Assembly Version: 4.0.0.0
    Win32 Version: 4.10020.1.4223
    CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/SourceCode.Security.UserRoleManager.Client/4.0.0.0__16a2c5aaaa1b130d/SourceCode.Security.UserRoleManager.Client.dll
----------------------------------------
SourceCode.Workflow.VisualDesigners
    Assembly Version: 4.0.0.0
    Win32 Version: 4.10060.1.0
    CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/SourceCode.Workflow.VisualDesigners/4.0.0.0__16a2c5aaaa1b130d/SourceCode.Workflow.VisualDesigners.dll
----------------------------------------
SourceCode.SmartObjects.Authoring
    Assembly Version: 4.0.0.0
    Win32 Version: 4.10060.1.0
    CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/SourceCode.SmartObjects.Authoring/4.0.0.0__16a2c5aaaa1b130d/SourceCode.SmartObjects.Authoring.dll
----------------------------------------
ComponentFactory.Krypton.Ribbon
    Assembly Version: 3.5.2.0
    Win32 Version: 3.5.2.0
    CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/ComponentFactory.Krypton.Ribbon/3.5.2.0__a87e673e9ecb6e8e/ComponentFactory.Krypton.Ribbon.dll
----------------------------------------
ComponentFactory.Krypton.Navigator
    Assembly Version: 3.5.2.0
    Win32 Version: 3.5.2.0
    CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/ComponentFactory.Krypton.Navigator/3.5.2.0__a87e673e9ecb6e8e/ComponentFactory.Krypton.Navigator.dll
----------------------------------------
SourceCode.Workflow.DesignerFramework
    Assembly Version: 4.0.0.0
    Win32 Version: 4.10060.1.0
    CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/SourceCode.Workflow.DesignerFramework/4.0.0.0__16a2c5aaaa1b130d/SourceCode.Workflow.DesignerFramework.dll
----------------------------------------
pwxodlkh
    Assembly Version: 4.0.0.0
    Win32 Version: 2.0.50727.3053 (netfxsp.050727-3000)
    CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System/2.0.0.0__b77a5c561934e089/System.dll
----------------------------------------
rsqrough
    Assembly Version: 4.0.0.0
    Win32 Version: 2.0.50727.3053 (netfxsp.050727-3000)
    CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System/2.0.0.0__b77a5c561934e089/System.dll
----------------------------------------
u2o3dhak
    Assembly Version: 4.0.0.0
    Win32 Version: 2.0.50727.3053 (netfxsp.050727-3000)
    CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System/2.0.0.0__b77a5c561934e089/System.dll
----------------------------------------
WindowsFormsIntegration
    Assembly Version: 3.0.0.0
    Win32 Version: 3.0.6920.1427 built by: SP
    CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/WindowsFormsIntegration/3.0.0.0__31bf3856ad364e35/WindowsFormsIntegration.dll
----------------------------------------
SourceCode.Workflow.Wizards
    Assembly Version: 4.0.0.0
    Win32 Version: 4.10060.1.0
    CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/SourceCode.Workflow.Wizards/4.0.0.0__16a2c5aaaa1b130d/SourceCode.Workflow.Wizards.dll
----------------------------------------
SourceCode.Workflow.Wizards.References
    Assembly Version: 4.0.0.0
    Win32 Version: 4.10060.1.0
    CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/SourceCode.Workflow.Wizards.References/4.0.0.0__16a2c5aaaa1b130d/SourceCode.Workflow.Wizards.References.dll
----------------------------------------
DataEvent.Wizard
    Assembly Version: 4.0.0.0
    Win32 Version: 4.10060.1.0
    CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/DataEvent.Wizard/4.0.0.0__16a2c5aaaa1b130d/DataEvent.Wizard.dll
----------------------------------------
SourceCode.K2Studio.Processes
    Assembly Version: 4.0.0.0
    Win32 Version: 4.10060.1.0
    CodeBase: file:///C:/Program%20Files/K2%20blackpearl/K2Studio/Plugins/SourceCode.K2Studio.Processes.dll
----------------------------------------
SourceCode.K2Studio.ProcessGuide
    Assembly Version: 4.0.0.0
    Win32 Version: 4.10060.1.0
    CodeBase: file:///C:/Program%20Files/K2%20blackpearl/K2Studio/Plugins/SourceCode.K2Studio.ProcessGuide.dll
----------------------------------------
SourceCode.K2Studio.ProcessHelper
    Assembly Version: 4.0.0.0
    Win32 Version: 4.10060.1.0
    CodeBase: file:///C:/Program%20Files/K2%20blackpearl/K2Studio/Plugins/SourceCode.K2Studio.ProcessHelper.dll
----------------------------------------
SourceCode.K2Studio.SmartObjects
    Assembly Version: 4.0.0.0
    Win32 Version: 4.10060.1.0
    CodeBase: file:///C:/Program%20Files/K2%20blackpearl/K2Studio/Plugins/SourceCode.K2Studio.SmartObjects.dll
----------------------------------------
SourceCode.K2Studio.UserBrowser
    Assembly Version: 4.0.0.0
    Win32 Version: 4.10060.1.0
    CodeBase: file:///C:/Program%20Files/K2%20blackpearl/K2Studio/Plugins/SourceCode.K2Studio.UserBrowser.dll
----------------------------------------
j4lqvw_x
    Assembly Version: 4.0.0.0
    Win32 Version: 2.0.50727.3053 (netfxsp.050727-3000)
    CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System/2.0.0.0__b77a5c561934e089/System.dll
----------------------------------------
PresentationFramework.Luna
    Assembly Version: 3.0.0.0
    Win32 Version: 3.0.6920.1427 built by: SP
    CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/PresentationFramework.Luna/3.0.0.0__31bf3856ad364e35/PresentationFramework.Luna.dll
----------------------------------------
Microsoft.Build.Framework
    Assembly Version: 3.5.0.0
    Win32 Version: 3.5.30729.1 built by: SP
    CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/Microsoft.Build.Framework/3.5.0.0__b03f5f7f11d50a3a/Microsoft.Build.Framework.dll
----------------------------------------
jxfwhlx1
    Assembly Version: 4.0.0.0
    Win32 Version: 2.0.50727.3053 (netfxsp.050727-3000)
    CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System/2.0.0.0__b77a5c561934e089/System.dll
----------------------------------------
Microsoft.Build.Engine
    Assembly Version: 3.5.0.0
    Win32 Version: 3.5.30729.1 built by: SP
    CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/Microsoft.Build.Engine/3.5.0.0__b03f5f7f11d50a3a/Microsoft.Build.Engine.dll
----------------------------------------
Microsoft.Build.Tasks
    Assembly Version: 2.0.0.0
    Win32 Version: 2.0.50727.3053 built by: netfxsp
    CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/Microsoft.Build.Tasks/2.0.0.0__b03f5f7f11d50a3a/Microsoft.Build.Tasks.dll
----------------------------------------
Microsoft.Build.Utilities
    Assembly Version: 2.0.0.0
    Win32 Version: 2.0.50727.3053 built by: netfxsp
    CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/Microsoft.Build.Utilities/2.0.0.0__b03f5f7f11d50a3a/Microsoft.Build.Utilities.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:

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.

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I figure it out. In mid project, I have 3 proecesses. Looks like one of them is corrupted. I removed it. That resolves the issue.

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