I want to update my plugin but I can't.  The current plug-in is not allowing me to correct indentation/format my source and will sometimes remove "import" statements from my code.

How can I fix this?

VERSON:

Eclipse IDE for Java Developers
Build id: 20090920-1017

ERROR:

Cannot complete the install because of a conflicting dependency.
  Software being installed: Groovy-Eclipse Feature 2.0.0.xx-20091017-2200-e35 (org.codehaus.groovy.eclipse.feature.feature.group 2.0.0.xx-20091017-2200-e35)
  Only one of the following can be installed at once:
    JDT Core patch for Groovy-Eclipse plugin 2.0.0.xx-20090929-1600-e35 (org.codehaus.groovy.jdt.patch.feature.jar 2.0.0.xx-20090929-1600-e35)
    JDT Core patch for Groovy-Eclipse plugin 2.0.0.xx-20091017-2200-e35 (org.codehaus.groovy.jdt.patch.feature.jar 2.0.0.xx-20091017-2200-e35)
  Only one of the following can be installed at once:
    Java Development Tools Core 3.5.0.xx-20090929-1600-e35 (org.eclipse.jdt.core 3.5.0.xx-20090929-1600-e35)
    Java Development Tools Core 3.5.1.v_972_R35x (org.eclipse.jdt.core 3.5.1.v_972_R35x)
    Java Development Tools Core 3.5.1.xx-20091017-2200-e35 (org.eclipse.jdt.core 3.5.1.xx-20091017-2200-e35)
    Java Development Tools Core 3.5.0.v_963 (org.eclipse.jdt.core 3.5.0.v_963)
  Cannot satisfy dependency:
    From: Groovy-Eclipse Feature 2.0.0.xx-20091017-2200-e35 (org.codehaus.groovy.eclipse.feature.feature.group 2.0.0.xx-20091017-2200-e35)
    To: org.codehaus.groovy.jdt.patch.feature.group [2.0.0.xx-20091017-2200-e35]
  Cannot satisfy dependency:
    From: JDT Core patch for Groovy-Eclipse plugin 2.0.0.xx-20090929-1600-e35 (org.codehaus.groovy.jdt.patch.feature.group 2.0.0.xx-20090929-1600-e35)
    To: org.codehaus.groovy.jdt.patch.feature.jar [2.0.0.xx-20090929-1600-e35]
  Cannot satisfy dependency:
    From: JDT Core patch for Groovy-Eclipse plugin 2.0.0.xx-20091017-2200-e35 (org.codehaus.groovy.jdt.patch.feature.group 2.0.0.xx-20091017-2200-e35)
    To: org.codehaus.groovy.jdt.patch.feature.jar [2.0.0.xx-20091017-2200-e35]
  Cannot satisfy dependency:
    From: JDT Core patch for Groovy-Eclipse plugin 2.0.0.xx-20091017-2200-e35 (org.codehaus.groovy.jdt.patch.feature.group 2.0.0.xx-20091017-2200-e35)
    To: org.eclipse.jdt.feature.group [3.5.0.v20090527-2000-7r88FEeFJePyvYeA33DjZ_c1,3.5.2)
  Cannot satisfy dependency:
    From: Eclipse Java Development Tools 3.5.0.v20090527-2000-7r88FEeFJePyvYeA33DjZ_c1 (org.eclipse.jdt.feature.group 3.5.0.v20090527-2000-7r88FEeFJePyvYeA33DjZ_c1)
    To: org.eclipse.jdt.core [3.5.0.v_963]
  Cannot satisfy dependency:
    From: Eclipse Java Development Tools 3.5.1.r351_v20090810-0600-7r88FEoFI0WTo6Az-1qFRHm37ChJ (org.eclipse.jdt.feature.group 3.5.1.r351_v20090810-0600-7r88FEoFI0WTo6Az-1qFRHm37ChJ)
    To: org.eclipse.jdt.core [3.5.1.v_972_R35x]
  Cannot satisfy dependency:
    From Patch: org.codehaus.groovy.jdt.patch.feature.group 2.0.0.xx-20091017-2200-e35 Eclipse Java Development Tools 3.5.0.v20090527-2000-7r88FEeFJePyvYeA33DjZ_c1 (org.eclipse.jdt.feature.group 3.5.0.v20090527-2000-7r88FEeFJePyvYeA33DjZ_c1)
    To: org.eclipse.jdt.core [3.5.1.xx-20091017-2200-e35]
  Cannot satisfy dependency:
    From Patch: org.codehaus.groovy.jdt.patch.feature.group 2.0.0.xx-20091017-2200-e35 Eclipse Java Development Tools 3.5.1.r351_v20090810-0600-7r88FEoFI0WTo6Az-1qFRHm37ChJ (org.eclipse.jdt.feature.group 3.5.1.r351_v20090810-0600-7r88FEoFI0WTo6Az-1qFRHm37ChJ)
    To: org.eclipse.jdt.core [3.5.1.xx-20091017-2200-e35]