Net.Framework unhandled and Backgroud unchangeable.

First of all I have to tell you I'm not native English speaker. So please accept my apologize for my English usage.

I really want a solutions for these.

After I installed Microsoft .NET framework and few programs such database program,ancient font program.I've change my wallpaper once.


1. I can't change Theme and background picture anymore. No matter what kind of Picture type .JPG .GIF . even windows background that comes with system. Its error will show " Internal error occurred"

2.There's no thumbnail view for picture in general folders. I mean when I open folder , There's only file name and empty white box instead of tiny picture.
No display for large Icon option, medium option or extra large icon. Also Icon picture.
but for list view, detail view , tiles view are fine.

3. I can't use some program such Windows7manager , Picasa
Here's error " Microsoft .NET Framework"
The type initializer for "W7MPCL.determinePassword" threw an exception"

This error also showing up when I open notebook.

I've been tried several ways to solve before. Close Net framework 3.5 feature , re-install, restore system before it occurred but still the same, remove program and re-install, Check malware and virus , Check service , google for solution.
I Still can't fix these problems.

Thanks for your kind.

Here's Pop-up

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

************** Exception Text **************
System.TypeInitializationException: The type initializer for 'W7MPCL.DeterminePassword' threw an exception. ---> System.UnauthorizedAccessException: Access to the registry key 'HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\Windows' is denied.
at Microsoft.Win32.RegistryKey.Win32Error(Int32 errorCode, String str)
at Microsoft.Win32.RegistryKey.CreateSubKey(String subkey, RegistryKeyPermissionCheck permissionCheck, RegistrySecurity registrySecurity)
at Microsoft.Win32.RegistryKey.CreateSubKey(String subkey)
at W7MPCL.DeterminePassword..cctor()
--- End of inner exception stack trace ---
at W7MPCL.DeterminePassword.DeterminePWD()
at Windows_7_Manager.frmSplash.Timer1_Tick(Object sender, EventArgs e)
at System.Windows.Forms.Timer.OnTick(EventArgs e)
at System.Windows.Forms.Timer.TimerNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

************** Loaded Assemblies **************
Assembly Version:
Win32 Version: 2.0.50727.4927 (NetFXspW7.050727-4900)
CodeBase: file:///C:/Windows/Microsoft.NET/Framework/v2.0.50727/mscorlib.dll
Assembly Version:
Win32 Version:
CodeBase: file:///C:/Program%20Files/Yamicsoft/Windows%207%20Manager/Windows7Manager.exe
Assembly Version:
Win32 Version: 2.0.50727.4927 (NetFXspW7.050727-4900)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Windows.Forms/
Assembly Version:
Win32 Version: 2.0.50727.4927 (NetFXspW7.050727-4900)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System/
Assembly Version:
Win32 Version: 2.0.50727.4927 (NetFXspW7.050727-4900)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Drawing/
Assembly Version:
Win32 Version: 8.0.50727.4927 (NetFXspW7.050727-4900)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/Microsoft.VisualBasic/
Assembly Version:
Win32 Version:
CodeBase: file:///C:/Program%20Files/Yamicsoft/Windows%207%20Manager/W7MPCL.DLL
Assembly Version:
Win32 Version: 2.0.50727.4927 (NetFXspW7.050727-4900)
CodeBase: file:///C:/Windows/assembly/GAC_32/System.Web/
Assembly Version:
Win32 Version:
CodeBase: file:///C:/Program%20Files/Yamicsoft/Windows%207%20Manager/DevComponents.DotNetBar.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 section.
The application must also be compiled with debugging

For example:

< jitDebugging="true" />

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 use home premium , not starter. and It can change normally before.

I have the same problem

Salutations to all,
I have the same problem. Did you find a fix? Does anyone have a solution to this annoyance. If not I will have to reinstall OS to Ultimate. Any help will be good help
I have added an attachment that gives error message.

Thanks in advance


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