I have Windows 7 ultimate RTM, I came to know that "vlite v1.12 final" is a software which can tweak any OS. I was trying to tweak one of my OS' but I am getting an error, here are the details of that error:

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

************** Exception Text **************
System.FormatException: Input string was not in a correct format.
at System.Number.StringToNumber(String str, NumberStyles options, NumberBuffer& number, NumberFormatInfo info, Boolean parseDecimal)
at System.Number.ParseInt32(String s, NumberStyles style, NumberFormatInfo info)
at System.Convert.ToInt32(String value)
at . . (String& )
at . . ()
at . . (Int32 )
at . . (Boolean )
at . . (Object , EventArgs )
at System.Windows.Forms.Control.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnClick(EventArgs e)
at System.Windows.Forms.Button.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: 2.0.50727.4927 (NetFXspW7.050727-4900)
CodeBase: file:///C:/Windows/Microsoft.NET/Framework/v2.0.50727/mscorlib.dll
----------------------------------------
vlite
Assembly Version: 1.2.0.2
Win32 Version: 1.2.0.2
CodeBase: file:///C:/Program%20Files/vLite/vLite.exe
----------------------------------------
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
----------------------------------------
vLite
Assembly Version: 1.2.0.2
Win32 Version: 1.2.0.2
CodeBase: file:///C:/Program%20Files/vLite/vLite.exe
----------------------------------------
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.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
----------------------------------------
MCDBNET2
Assembly Version: 1.3.3.33894
Win32 Version: 1.33.0.133
CodeBase: file:///C:/Program%20Files/vLite/MCDBNET2.DLL
----------------------------------------
msvcm80
Assembly Version: 8.0.50727.4927
Win32 Version: 8.00.50727.4927
CodeBase: file:///C:/Windows/WinSxS/x86_microsoft.vc80.crt_1fc8b3b9a1e18e3b_8.0.50727.4927_none_d08a205e442db5b5/msvcm80.dll
----------------------------------------
vhelper
Assembly Version: 1.0.3166.20582
Win32 Version: 1, 0, 0, 1
CodeBase: file:///C:/Program%20Files/vLite/vhelper.DLL
----------------------------------------
msvcm90
Assembly Version: 9.0.30729.1
Win32 Version: 9.00.30729.1
CodeBase: file:///C:/Program%20Files/vLite/msvcm90.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
----------------------------------------

************** 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 have downloaded a modified windows 7 and that is very beautiful but too bulky. It is about 4 GB and want to make is light with the help of vlite. Primarily I thought this error is because of .net framework, but I have already installed .net framework but still getting the error.

Please help me guys.....................

You'll find no help for warez here...