Cannot complete the install because of a conflicting dependency

Hi All,

I am trying to install gwt designer on my eclipse, however getting following message...Can somebody help me out?

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Cannot complete the install because of a conflicting dependency.

  Software being installed: Swing Designer 1.5.2.r36x201303071654 (org.eclipse.wb.swing.feature.feature.group 1.5.2.r36x201303071654)

  Software currently installed: WindowBuilder Core 1.5.0.r36x201206111201 (org.eclipse.wb.core.feature.feature.group 1.5.0.r36x201206111201)

  Only one of the following can be installed at once: 

    WindowBuilder Win32 OS Support 1.5.0.r36x201206111201 (org.eclipse.wb.os.win32 1.5.0.r36x201206111201)

    WindowBuilder Win32 OS Support 1.5.2.r36x201303061457 (org.eclipse.wb.os.win32 1.5.2.r36x201303061457)

  Cannot satisfy dependency:

    From: WindowBuilder Core 1.5.0.r36x201206111201 (org.eclipse.wb.core.feature.feature.group 1.5.0.r36x201206111201)

    To: org.eclipse.wb.os.win32 [1.5.0.r36x201206111201]

  Cannot satisfy dependency:

    From: WindowBuilder Core 1.5.2.r36x201303061457 (org.eclipse.wb.core.feature.feature.group 1.5.2.r36x201303061457)

    To: org.eclipse.wb.os.win32 [1.5.2.r36x201303061457]

  Cannot satisfy dependency:

    From: Swing Designer 1.5.2.r36x201303071654 (org.eclipse.wb.swing.feature.feature.group 1.5.2.r36x201303071654)

    To: org.eclipse.wb.core.feature.feature.group 1.5.2.r36x201303061457

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