Issues with Windows XP & Ruby Mine

This is a long standing issue I have had in installing Ruby Mine - version 1.5 as well as earlier.  I am running Windows XP with a pretty vanilla installation of Ruby located in c:\ruby.  However, after installation of Ruby Mine it recognizes the Ruby SDK correctly but shows no gems installed.  If I try to install a plugin the UI indicates success but there is no gem installed.  If I look in the log there is the following error message:

Assertion failed: gem install internal error
sdk: Ruby SDK 1.8.6 (C:\Ruby\bin\ruby.exe)
dependency: GemDependency{myName='rails', myVersion='2.3.1', myBound=EQUAL, myUrl='http://gems.rubyonrails.org/'}
rootpath: file:///Ruby/lib/ruby/gems/1.8/gems
gems:
broken root
specs:
broken specs
rootpath: file:///Documents and Settings/Owner/.gem/ruby/1.8;C/gems
gems:
broken root
specs:
broken spec

java.lang.Throwable
    at com.intellij.openapi.diagnostic.Logger.assertTrue(Logger.java:89)
    at org.jetbrains.plugins.ruby.gem.GemManager.getInstalledGems(GemManager.java:250)
    at org.jetbrains.plugins.ruby.gem.GemInstallUtil$2$1$1.run(GemInstallUtil.java:15)
    at com.intellij.openapi.application.impl.ApplicationImpl.runWriteAction(ApplicationImpl.java:193)
    at org.jetbrains.plugins.ruby.gem.GemInstallUtil$2$1.run(GemInstallUtil.java:2)
    at com.intellij.openapi.application.impl.LaterInvocator$FlushQueue.run(LaterInvocator.java:3)
    at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
    at com.intellij.ide.IdeEventQueue.f(IdeEventQueue.java:111)
    at com.intellij.ide.IdeEventQueue.b(IdeEventQueue.java:93)
    at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:257)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:178)
    at java.awt.Dialog$1.run(Dialog.java:1051)
    at java.awt.Dialog$3.run(Dialog.java:1103)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.awt.Dialog.show(Dialog.java:1101)
    at com.intellij.openapi.ui.impl.DialogWrapperPeerImpl$MyDialog.show(DialogWrapperPeerImpl.java:88)
    at com.intellij.openapi.ui.impl.DialogWrapperPeerImpl.show(DialogWrapperPeerImpl.java:117)
    at com.intellij.openapi.ui.DialogWrapper.show(DialogWrapper.java:935)
    at com.intellij.openapi.progress.util.ProgressWindow$MyDialog.show(ProgressWindow.java:78)
    at com.intellij.openapi.progress.util.ProgressWindow.showDialog(ProgressWindow.java:7)
    at com.intellij.openapi.progress.util.ProgressWindow$1$1.run(ProgressWindow.java:6)
    at com.intellij.util.Alarm$Request$1.run(Alarm.java:232)
    at com.intellij.openapi.application.impl.LaterInvocator$FlushQueue.run(LaterInvocator.java:3)
    at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
    at com.intellij.ide.IdeEventQueue.f(IdeEventQueue.java:111)
    at com.intellij.ide.IdeEventQueue.b(IdeEventQueue.java:93)
    at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:257)
    at com.intellij.ide.IdeEventQueue.pumpEventsForHierarchy(IdeEventQueue.java:99)
    at com.intellij.openapi.progress.util.ProgressWindow.startBlocking(ProgressWindow.java:107)
    at com.intellij.openapi.application.impl.ApplicationImpl.runProcessWithProgressSynchronously(ApplicationImpl.java:264)
    at com.intellij.openapi.progress.impl.ProgressManagerImpl.a(ProgressManagerImpl.java:60)
    at com.intellij.openapi.progress.impl.ProgressManagerImpl.run(ProgressManagerImpl.java:90)
    at org.jetbrains.plugins.ruby.gem.GemInstallUtil.installGems(GemInstallUtil.java:81)
    at org.jetbrains.plugins.ruby.gem.GemInstallUtil.installGemsDependencies(GemInstallUtil.java:61)
    at org.jetbrains.plugins.ruby.gem.GemInstallUtil.installGems(GemInstallUtil.java:44)
    at org.jetbrains.plugins.ruby.gem.ui.AddGemDialog$11.run(AddGemDialog.java:1)
    at com.intellij.openapi.application.impl.ApplicationImpl.runWriteAction(ApplicationImpl.java:193)
    at org.jetbrains.plugins.ruby.gem.ui.AddGemDialog.doOKAction(AddGemDialog.java:181)
    at com.intellij.openapi.ui.DialogWrapper$OkAction.actionPerformed(DialogWrapper.java:1040)
    at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)
    at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)
    at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
    at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
    at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:236)
    at java.awt.Component.processMouseEvent(Component.java:6216)
    at javax.swing.JComponent.processMouseEvent(JComponent.java:3265)
    at java.awt.Component.processEvent(Component.java:5981)
    at java.awt.Container.processEvent(Container.java:2041)
    at java.awt.Component.dispatchEventImpl(Component.java:4583)
    at java.awt.Container.dispatchEventImpl(Container.java:2099)
    at java.awt.Component.dispatchEvent(Component.java:4413)
    at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4556)
    at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4220)
    at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4150)
    at java.awt.Container.dispatchEventImpl(Container.java:2085)
    at java.awt.Window.dispatchEventImpl(Window.java:2475)
    at java.awt.Component.dispatchEvent(Component.java:4413)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
    at com.intellij.ide.IdeEventQueue.f(IdeEventQueue.java:111)
    at com.intellij.ide.IdeEventQueue.b(IdeEventQueue.java:170)
    at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:257)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:178)
    at java.awt.Dialog$1.run(Dialog.java:1051)
    at java.awt.Dialog$3.run(Dialog.java:1103)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.awt.Dialog.show(Dialog.java:1101)
    at com.intellij.openapi.ui.impl.DialogWrapperPeerImpl$MyDialog.show(DialogWrapperPeerImpl.java:88)
    at com.intellij.openapi.ui.impl.DialogWrapperPeerImpl.show(DialogWrapperPeerImpl.java:117)
    at com.intellij.openapi.ui.DialogWrapper.show(DialogWrapper.java:935)
    at org.jetbrains.plugins.ruby.gem.ui.GemManagerPanel.a(GemManagerPanel.java:141)
    at org.jetbrains.plugins.ruby.gem.ui.GemManagerPanel.access$100(GemManagerPanel.java:219)
    at org.jetbrains.plugins.ruby.gem.ui.GemManagerPanel$3.actionPerformed(GemManagerPanel.java:1)
    at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)
    at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)
    at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
    at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
    at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:236)
    at java.awt.Component.processMouseEvent(Component.java:6216)
    at javax.swing.JComponent.processMouseEvent(JComponent.java:3265)
    at java.awt.Component.processEvent(Component.java:5981)
    at java.awt.Container.processEvent(Container.java:2041)
    at java.awt.Component.dispatchEventImpl(Component.java:4583)
    at java.awt.Container.dispatchEventImpl(Container.java:2099)
    at java.awt.Component.dispatchEvent(Component.java:4413)
    at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4556)
    at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4220)
    at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4150)
    at java.awt.Container.dispatchEventImpl(Container.java:2085)
    at java.awt.Window.dispatchEventImpl(Window.java:2475)
    at java.awt.Component.dispatchEvent(Component.java:4413)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
    at com.intellij.ide.IdeEventQueue.f(IdeEventQueue.java:111)
    at com.intellij.ide.IdeEventQueue.b(IdeEventQueue.java:170)
    at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:257)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:178)
    at java.awt.Dialog$1.run(Dialog.java:1051)
    at java.awt.Dialog$3.run(Dialog.java:1103)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.awt.Dialog.show(Dialog.java:1101)
    at com.intellij.openapi.ui.impl.DialogWrapperPeerImpl$MyDialog.show(DialogWrapperPeerImpl.java:88)
    at com.intellij.openapi.ui.impl.DialogWrapperPeerImpl.show(DialogWrapperPeerImpl.java:117)
    at com.intellij.openapi.ui.DialogWrapper.show(DialogWrapper.java:935)
    at com.intellij.ide.actions.ShowSettingsUtilImpl.a(ShowSettingsUtilImpl.java:24)
    at com.intellij.ide.actions.ShowSettingsUtilImpl.showSettingsDialog(ShowSettingsUtilImpl.java:44)
    at com.intellij.ide.actions.ShowSettingsAction.actionPerformed(ShowSettingsAction.java:2)
    at com.intellij.openapi.actionSystem.impl.ActionMenuItem$ActionTransmitter.actionPerformed(ActionMenuItem.java:13)
    at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)
    at com.intellij.openapi.actionSystem.impl.ActionMenuItem.fireActionPerformed(ActionMenuItem.java:61)
    at com.intellij.ui.plaf.beg.BegMenuItemUI.a(BegMenuItemUI.java:82)
    at com.intellij.ui.plaf.beg.BegMenuItemUI.access$300(BegMenuItemUI.java:134)
    at com.intellij.ui.plaf.beg.BegMenuItemUI$MyMouseInputHandler.mouseReleased(BegMenuItemUI.java:8)
    at java.awt.Component.processMouseEvent(Component.java:6216)
    at javax.swing.JComponent.processMouseEvent(JComponent.java:3265)
    at java.awt.Component.processEvent(Component.java:5981)
    at java.awt.Container.processEvent(Container.java:2041)
    at java.awt.Component.dispatchEventImpl(Component.java:4583)
    at java.awt.Container.dispatchEventImpl(Container.java:2099)
    at java.awt.Component.dispatchEvent(Component.java:4413)
    at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4556)
    at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4220)
    at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4150)
    at java.awt.Container.dispatchEventImpl(Container.java:2085)
    at java.awt.Window.dispatchEventImpl(Window.java:2475)
    at java.awt.Component.dispatchEvent(Component.java:4413)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
    at com.intellij.ide.IdeEventQueue.f(IdeEventQueue.java:111)
    at com.intellij.ide.IdeEventQueue.b(IdeEventQueue.java:170)
    at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:257)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)

Would love some insight as this has been driving me crazy!

- cheers

Mark