安装插件时，遇到这一坨问题，求解决方案


Cannot complete the install because of a conflicting dependency.
  Software being installed: WST Web Plug-in Developer Resources 3.1.1.v200908120400-7H5778a3PixJeiw96KaEgaNvfKgN (org.eclipse.wst.web_sdk.feature.feature.group 3.1.1.v200908120400-7H5778a3PixJeiw96KaEgaNvfKgN)
  Software currently installed: Eclipse Weaving Service Feature 2.1.3.e36x-20110404-2200 (org.eclipse.contribution.weaving.feature.group 2.1.3.e36x-20110404-2200)
  Software currently installed: Data Tools Platform Extender SDK 1.7.2.v200909251450-7O9I7bFD0IVIPElYvW1YBTgDFOgj (org.eclipse.datatools.sdk.feature.feature.group 1.7.2.v200909251450-7O9I7bFD0IVIPElYvW1YBTgDFOgj)
  Only one of the following can be installed at once: 
    Equinox Provisioning Core 2.0.3.R36x_v20110111 (org.eclipse.equinox.p2.core 2.0.3.R36x_v20110111)
    Equinox Provisioning Core 2.0.2.R36x_v20100804 (org.eclipse.equinox.p2.core 2.0.2.R36x_v20100804)
    Equinox Provisioning Core 1.0.101.R35x_v20090819 (org.eclipse.equinox.p2.core 1.0.101.R35x_v20090819)
    Equinox Provisioning Core 2.0.0.v20100510 (org.eclipse.equinox.p2.core 2.0.0.v20100510)
  Only one of the following can be installed at once: 
    Eclipse Preferences Mechanism 3.2.300.v20090520-1800 (org.eclipse.equinox.preferences 3.2.300.v20090520-1800)
    Eclipse Preferences Mechanism 3.3.0.v20100503 (org.eclipse.equinox.preferences 3.3.0.v20100503)
    Eclipse Preferences Mechanism 3.2.301.R35x_v20091117 (org.eclipse.equinox.preferences 3.2.301.R35x_v20091117)
  Cannot satisfy dependency:
    From: Eclipse Weaving Service Feature 2.1.3.e36x-20110404-2200 (org.eclipse.contribution.weaving.feature.group 2.1.3.e36x-20110404-2200)
    To: org.eclipse.contribution.weaving.jdt [2.1.3.e36x-20110404-2200]
  Cannot satisfy dependency:
    From: JDT Weaving 2.1.3.e36x-20110404-2200 (org.eclipse.contribution.weaving.jdt 2.1.3.e36x-20110404-2200)
    To: bundle org.eclipse.core.runtime 3.6.0
  Cannot satisfy dependency:
    From: Core Runtime 3.6.0.v20100505 (org.eclipse.core.runtime 3.6.0.v20100505)
    To: bundle org.eclipse.equinox.preferences [3.3.0,4.0.0)
  Cannot satisfy dependency:
    From: Data Tools Platform Extender SDK 1.7.2.v200909251450-7O9I7bFD0IVIPElYvW1YBTgDFOgj (org.eclipse.datatools.sdk.feature.feature.group 1.7.2.v200909251450-7O9I7bFD0IVIPElYvW1YBTgDFOgj)
    To: org.eclipse.pde.feature.group 3.3.0
  Cannot satisfy dependency:
    From: Equinox Provisioning Engine 2.0.0.v20100606 (org.eclipse.equinox.p2.engine 2.0.0.v20100606)
    To: bundle org.eclipse.equinox.p2.core [2.0.0,2.1.0)
  Cannot satisfy dependency:
    From: Equinox Provisioning Engine 2.0.1.R36x_v20110201 (org.eclipse.equinox.p2.engine 2.0.1.R36x_v20110201)
    To: bundle org.eclipse.equinox.p2.core [2.0.0,2.1.0)
  Cannot satisfy dependency:
    From: Plug-in Development Environment Build Support 3.6.1.R36x_v20100823 (org.eclipse.pde.build 3.6.1.R36x_v20100823)
    To: package org.eclipse.equinox.p2.core [2.0.0,3.0.0)
  Cannot satisfy dependency:
    From: Plug-in Development Environment Build Support 3.6.2.R36x_20110203 (org.eclipse.pde.build 3.6.2.R36x_20110203)
    To: package org.eclipse.equinox.p2.core [2.0.0,3.0.0)
  Cannot satisfy dependency:
    From: PDE Core 3.6.0.v20100601 (org.eclipse.pde.core 3.6.0.v20100601)
    To: bundle org.eclipse.equinox.p2.core [2.0.0,3.0.0)
  Cannot satisfy dependency:
    From: Eclipse Plug-in Development Environment 3.5.1.R35x_v20090811-7Z7_F9zFDX-aT6Ywvh8_S93 (org.eclipse.pde.feature.group 3.5.1.R35x_v20090811-7Z7_F9zFDX-aT6Ywvh8_S93)
    To: org.eclipse.platform.feature.group [3.0.0,4.0.0)
  Cannot satisfy dependency:
    From: Eclipse Plug-in Development Environment 3.5.2.R35x_v20100119-7Z7_FA2FDX-aXQYWqYDBz-z0qufo (org.eclipse.pde.feature.group 3.5.2.R35x_v20100119-7Z7_FA2FDX-aXQYWqYDBz-z0qufo)
    To: org.eclipse.platform.feature.group [3.0.0,4.0.0)
  Cannot satisfy dependency:
    From: Eclipse Plug-in Development Environment 3.6.0.v20100525-7b7mFKtFEx2XmfZ4_B7NUJA (org.eclipse.pde.feature.group 3.6.0.v20100525-7b7mFKtFEx2XmfZ4_B7NUJA)
    To: org.eclipse.pde.core [3.6.0.v20100601]
  Cannot satisfy dependency:
    From: Eclipse Plug-in Development Environment 3.6.1.r361_v20100727-7b7mFL-FET3dhESDgE5_bkJ (org.eclipse.pde.feature.group 3.6.1.r361_v20100727-7b7mFL-FET3dhESDgE5_bkJ)
    To: org.eclipse.pde.build [3.6.1.R36x_v20100823]
  Cannot satisfy dependency:
    From: Eclipse Plug-in Development Environment 3.6.2.r362_v20110203-7b7mFL2FET3dhHalh1iNZtL (org.eclipse.pde.feature.group 3.6.2.r362_v20110203-7b7mFL2FET3dhHalh1iNZtL)
    To: org.eclipse.pde.build [3.6.2.R36x_20110203]
  Cannot satisfy dependency:
    From: Eclipse Platform 3.5.1.R35x_v20090910-9gEeG1_FthkNDSP2odXdThaOu9GFDPn83DGB7 (org.eclipse.platform.feature.group 3.5.1.R35x_v20090910-9gEeG1_FthkNDSP2odXdThaOu9GFDPn83DGB7)
    To: org.eclipse.rcp.feature.group [3.5.1.R35x_v20090811-9SA0FxVFqE70OL1ARMrfcO6e7BA6]
  Cannot satisfy dependency:
    From: Eclipse Platform 3.5.2.R35x_v20100210-0800-9hEiFzmFst-TiEn9hNYgDWg1XN8ulH_JvCNGB (org.eclipse.platform.feature.group 3.5.2.R35x_v20100210-0800-9hEiFzmFst-TiEn9hNYgDWg1XN8ulH_JvCNGB)
    To: org.eclipse.rcp.feature.group [3.5.2.R35x_v20100119-9SA0FxwFnoCU5XxWItFdXXb27BA6]
  Cannot satisfy dependency:
    From: Eclipse Platform 3.6.0.v20100602-9gF78GpqFt6trOGhL60z0oEx3fz-JKNwxPY (org.eclipse.platform.feature.group 3.6.0.v20100602-9gF78GpqFt6trOGhL60z0oEx3fz-JKNwxPY)
    To: org.eclipse.ui.ide [3.6.0.I20100601-0800]
  Cannot satisfy dependency:
    From: Eclipse Platform 3.6.1.r361_v20100909-9gF78GrkFqw7GrsZnvz0JWNTeb6fue6896L (org.eclipse.platform.feature.group 3.6.1.r361_v20100909-9gF78GrkFqw7GrsZnvz0JWNTeb6fue6896L)
    To: org.eclipse.ui.ide [3.6.1.M20100825-0800]
  Cannot satisfy dependency:
    From: Eclipse Platform 3.6.2.r362_v20110210-9gF78Gs1FrIGnHDHWkEcopoN8AmxeZflGDGKQi (org.eclipse.platform.feature.group 3.6.2.r362_v20110210-9gF78Gs1FrIGnHDHWkEcopoN8AmxeZflGDGKQi)
    To: org.eclipse.ui.ide [3.6.2.M20101201-0800]
  Cannot satisfy dependency:
    From: Eclipse RCP 3.5.1.R35x_v20090811-9SA0FxVFqE70OL1ARMrfcO6e7BA6 (org.eclipse.rcp.feature.group 3.5.1.R35x_v20090811-9SA0FxVFqE70OL1ARMrfcO6e7BA6)
    To: org.eclipse.equinox.preferences [3.2.300.v20090520-1800]
  Cannot satisfy dependency:
    From: Eclipse RCP 3.5.2.R35x_v20100119-9SA0FxwFnoCU5XxWItFdXXb27BA6 (org.eclipse.rcp.feature.group 3.5.2.R35x_v20100119-9SA0FxwFnoCU5XxWItFdXXb27BA6)
    To: org.eclipse.equinox.preferences [3.2.301.R35x_v20091117]
  Cannot satisfy dependency:
    From: Eclipse IDE UI 3.6.0.I20100601-0800 (org.eclipse.ui.ide 3.6.0.I20100601-0800)
    To: bundle org.eclipse.equinox.p2.engine [2.0.0,3.0.0)
  Cannot satisfy dependency:
    From: Eclipse IDE UI 3.6.1.M20100825-0800 (org.eclipse.ui.ide 3.6.1.M20100825-0800)
    To: bundle org.eclipse.equinox.p2.engine [2.0.0,3.0.0)
  Cannot satisfy dependency:
    From: Eclipse IDE UI 3.6.2.M20101201-0800 (org.eclipse.ui.ide 3.6.2.M20101201-0800)
    To: bundle org.eclipse.equinox.p2.engine [2.0.0,3.0.0)
  Cannot satisfy dependency:
    From: org.eclipse.wst.server.discovery 1.0.1.v20100210
    To: bundle org.eclipse.equinox.p2.core [1.0.100,2.0.0)
  Cannot satisfy dependency:
    From: WST Server UI 3.1.1.v20090727b-7B3DPAtJZRZxULQRALIM4256 (org.eclipse.wst.server_ui.feature.feature.group 3.1.1.v20090727b-7B3DPAtJZRZxULQRALIM4256)
    To: org.eclipse.wst.server.discovery [1.0.1.v20100210]
  Cannot satisfy dependency:
    From: WST Web Plug-in Developer Resources 3.1.1.v200908120400-7H5778a3PixJeiw96KaEgaNvfKgN (org.eclipse.wst.web_sdk.feature.feature.group 3.1.1.v200908120400-7H5778a3PixJeiw96KaEgaNvfKgN)
    To: org.eclipse.wst.web_ui.feature.feature.group [3.1.1.v200908120400-7R77FStEVw2z07WtDz-OZrhL5C-3]
  Cannot satisfy dependency:
    From: Eclipse Web Developer Tools 3.1.1.v200908120400-7R77FStEVw2z07WtDz-OZrhL5C-3 (org.eclipse.wst.web_ui.feature.feature.group 3.1.1.v200908120400-7R77FStEVw2z07WtDz-OZrhL5C-3)
    To: org.eclipse.wst.server_ui.feature.feature.group [3.1.1.v20090727b-7B3DPAtJZRZxULQRALIM4256]