An exception occurred under Win7 64 digits: The object reference was not set to an instance of the object

Hello, Win7 Does this problem, has been feedback to the author, in fact, many. NET write application will appear such a mistake, and then ignore it, can continue to use the good, this does not seem to be.

Computer simulation instrument software 1.20 Green Version "An exception occurred under Win7 64 digits: Object references are not set to an instance of an object. The details are as follows:

Exception text **************

Loaded Assemblies **************

mscorlib

Assembly version: 2.0.0.0

Win32 version: 2.0.50727.5477 (win7sp1gdr.050727-5400)

Basic code: File:///C:/Windows/Microsoft.NET/Framework/v2.0.50727/mscorlib.dll

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Mscorlib.resources

Assembly version: 2.0.0.0

Win32 version: 2.0.50727.5477 (win7sp1gdr.050727-5400)

Basic code: File:///C:/Windows/Microsoft.NET/Framework/v2.0.50727/mscorlib.dll

----------------------------------------

Little Piano

Assembly version: 1.0.0.0

Win32 version: 1.0.0.0

Basic code: File:///H:/Download/Software/Musical instrument simulation/littlepiano/little%20piano.exe

----------------------------------------

Microsoft.VisualBasic

Assembly version: 8.0.0.0

Win32 version: 8.0.50727.5420 (win7sp1.050727-5400)

Basic code: File:///C:/Windows/assembly/GAC_MSIL/Microsoft.VisualBasic/8.0.0.0__b03f5f7f11d50a3a/Microsoft.VisualBasic.dll

----------------------------------------

System

Assembly version: 2.0.0.0

Win32 version: 2.0.50727.5467 (win7sp1gdr.050727-5400)

Basic code: File:///C:/Windows/assembly/GAC_MSIL/System/2.0.0.0__b77a5c561934e089/System.dll

----------------------------------------

System.Windows.Forms

Assembly version: 2.0.0.0

Win32 version: 2.0.50727.5468 (win7sp1gdr.050727-5400)

Basic code: File:///C:/Windows/assembly/GAC_MSIL/System.Windows.Forms/2.0.0.0__b77a5c561934e089/System.Windows.Forms.dll

----------------------------------------

System.Drawing

Assembly version: 2.0.0.0

Win32 version: 2.0.50727.5467 (win7sp1gdr.050727-5400)

Basic code: File:///C:/Windows/assembly/GAC_MSIL/System.Drawing/2.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll

----------------------------------------

System.Configuration

Assembly version: 2.0.0.0

Win32 version: 2.0.50727.5476 (win7sp1gdr.050727-5400)

Basic code: File:///C:/Windows/assembly/GAC_MSIL/System.Configuration/2.0.0.0__b03f5f7f11d50a3a/System.Configuration.dll

----------------------------------------

System.Xml

Assembly version: 2.0.0.0

Win32 version: 2.0.50727.5476 (win7sp1gdr.050727-5400)

Basic code: File:///C:/Windows/assembly/GAC_MSIL/System.Xml/2.0.0.0__b77a5c561934e089/System.Xml.dll

----------------------------------------

System.Runtime.Remoting

Assembly version: 2.0.0.0

Win32 version: 2.0.50727.5483 (win7sp1gdr.050727-5400)

Basic code: File:///C:/Windows/assembly/GAC_MSIL/System.Runtime.Remoting/2.0.0.0__b77a5c561934e089/System.Runtime.Remoting.dll

----------------------------------------

System.Windows.Forms.resources

Assembly version: 2.0.0.0

Win32 version: 2.0.50727.5420 (win7sp1.050727-5400)

Basic code: FILE:///C:/WINDOWS/ASSEMBLY/GAC_MSIL/SYSTEM.WINDOWS.FORMS.RESOURCES/2.0.0.0_ZH-CHS_B77A5C561934E089/ System.Windows.Forms.resources.dll