Cannot complete the install because of a conflicting dependency.
  Software being installed: Eclipse e4 Tools Bridge for 3.x (Incubation) 0.11.0.v20110613-2030-7E8v0FIhIexRlZ-MU7gSb (org.eclipse.e4.tools.e3x.bridge.feature.feature.group 0.11.0.v20110613-2030-7E8v0FIhIexRlZ-MU7gSb)
  Software currently installed: Eclipse for RCP and RAP Developers 1.5.0.20120510-1215 (epp.package.rcp 1.5.0.20120510-1215)
  Only one of the following can be installed at once:
    EMF Common 2.8.0.v20120315-1035 (org.eclipse.emf.common 2.8.0.v20120315-1035)
    EMF Common 2.8.0.v20120504-0433 (org.eclipse.emf.common 2.8.0.v20120504-0433)
  Cannot satisfy dependency:
    From: Eclipse for RCP and RAP Developers 1.5.0.20120510-1215 (epp.package.rcp 1.5.0.20120510-1215)
    To: org.eclipse.epp.package.rcp.feature.feature.group [1.5.0.20120510-1215]
  Cannot satisfy dependency:
    From: Eclipse e4 Rich Client Platform 1.1.0.v20120131-1846-8yFTEFygGGduEKALqUdLplnZ (org.eclipse.e4.rcp.feature.group 1.1.0.v20120131-1846-8yFTEFygGGduEKALqUdLplnZ)
    To: org.eclipse.emf.common.feature.group [2.7.0,3.0.0)
  Cannot satisfy dependency:
    From: Eclipse e4 Tools Bridge for 3.x (Incubation) 0.11.0.v20110613-2030-7E8v0FIhIexRlZ-MU7gSb (org.eclipse.e4.tools.e3x.bridge.feature.feature.group 0.11.0.v20110613-2030-7E8v0FIhIexRlZ-MU7gSb)
    To: org.eclipse.emf.common [2.8.0.v20120315-1035]
  Cannot satisfy dependency:
    From: EMF Common 2.8.0.v20120504-0433 (org.eclipse.emf.common.feature.group 2.8.0.v20120504-0433)
    To: org.eclipse.emf.common [2.8.0.v20120504-0433]
  Cannot satisfy dependency:
    From: EPP RCP/RAP Feature 1.5.0.20120510-1215 (org.eclipse.epp.package.rcp.feature.feature.group 1.5.0.20120510-1215)
    To: org.eclipse.rcp.feature.group 4.1.0
  Cannot satisfy dependency:
    From: Eclipse RCP 4.2.0.v20120403-2031-7IAPA7BrHQiYSPvgLsJTpBMrVeMq (org.eclipse.rcp.feature.group 4.2.0.v20120403-2031-7IAPA7BrHQiYSPvgLsJTpBMrVeMq)
    To: org.eclipse.e4.rcp.feature.group [1.1.0.v20120131-1846-8yFTEFygGGduEKALqUdLplnZ]