[Visual Studio 2010] Problem with resource view

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Visual-Studio

Hi guys,

I have a MFC project with Visual Studio 2010. One day, when i open the resource file to make some change, i receive this screen:

http://imageshack.us/photo/my-images/703/96802555.png/[^]

And if i save the project then open the resource file with text editor, all alignment information of that dialog

BEGIN
    LEFTMARGIN, 7
    RIGHTMARGIN, 223
    TOPMARGIN, 7
    BOTTOMMARGIN, 206
END

was replaced with dummy values

BEGIN
    , 50
    , 4653056
END

I don't have any idea about this problem. Google also doesn't help.

If you have any recommend to fix this, please let me know.

Thank you very much!