rem: var missingPluginsArray = tabbrowser.mCurrentTab.missingPlugins; 
add: var missingPluginsArray = tabbrowser.selectedBrowser.missingPlugins; 
context: function pluginsMissing(){  // get the urls of missing plugins  var tabbrowser = getBrowser();  var missingPluginsArray = tabbrowser.mCurrentTab.missingPlugins;  if (missingPluginsArray) {    window.openDialog("chrome://mozapps/content/plugins/pluginInstallerWizard.xul",      "PFSWindow", "modal,chrome,resizable=yes", {plugins: missingPluginsArray, tab: tabbrowser.mCurrentTab});  }}
meta: 10520	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/10520/8f7bec57fe1f715d7181f8b39309c75915ac79ee/browser.js/buggy/browser/base/content/browser.js