AutoDesk Inventor Viewer 2013 giving error d3dx10_43.dll does not exist when opening a drawing

AutoDesk Inventor Viewer 2013 giving error d3dx10_43.dll does not exist when opening a drawing

PROBLEM:

AutoDesk Inventor Viewer 2013 giving error d3dx10_43.dll does not exist when opening a drawing.

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Serious error
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Library C:\Program Files\Autodesk\Inventor View 2013\Bin\d3dx10_43.dll does not exist.
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OK  
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SOLUTION:

Downloaded DirectX from Microsoft WebSite and re-installed DirectX and user is now working.

http://www.microsoft.com/download/en/details.aspx?id=35

http://www.microsoft.com/download/en/details.aspx?id=8109