Bug 52585 [About] "more info" on plugin in about box puts up error dialog
Select Help | About | Plug-In Details. In the dialog select the Plug-In Core Boot. Click "More Info" Get an error dialog with title "bundleentry://16/about.html" and text "Windows cannot access the specified device path or file. You may not have the appropriate permissions to access the item."
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/dialogs/AboutPluginsDialog.java
* @param isSelected whether there is a selection in the table
	 */
	protected void setMoreButtonEnablement(boolean isSelected) {
		moreInfo.setEnabled(isSelected && selectionHasInfo());
	}
	/**
	 * Check if the currently selected plugin has additional
	 * information to show.
	 * 
	 * @return true if the selected plugin has additional info available to display
	 */
	private boolean selectionHasInfo(){
			TableItem[] items = vendorInfo.getSelection();
			if (items.length == 0)
				return false;
			int i = vendorInfo.getSelectionIndex();
			IPluginDescriptor desc = info[i];
			URL infoURL = desc.find(new Path(PLUGININFO));
			if (infoURL == null && IDEWorkbenchPlugin.DEBUG) {
				
				IDEWorkbenchPlugin.log("Problem reading plugin info for: " + desc.getLabel()); 
			} 
			return infoURL != null;
	}
	/**
	 * Create the button to provide more info on the selected plugin.
	 *
	 * @return true if there is an item selected in the table, false otherwise
	 */
	private boolean tableHasSelection() {