Ubiquity 0.1.4 can't open new tabs in Firefox 3.0.5

Using Windows XP.

Fehler: window is not defined
Quelldatei: file:///C:/Dokumente%20und%20Einstellungen/Admin/Anwendungsdaten/Mozilla/Firefox/Profiles/mvu3femf.default/extensions/ubiquity@labs.mozilla.com/modules/utils.js
Zeile: 205

Fehler: Traceback for last exception:
openUrlInBrowser("about:ubiquity")@file:///C:/Dokumente%20und%20Einstellungen/Admin/Anwendungsdaten/Mozilla/Firefox/Profiles/mvu3femf.default/extensions/ubiquity@labs.mozilla.com/modules/utils.js:205
(null,[object Object])@file:///C:/Dokumente%20und%20Einstellungen/Admin/Anwendungsdaten/Mozilla/Firefox/Profiles/mvu3femf.default/extensions/ubiquity@labs.mozilla.com/modules/sandboxfactory.js:1981
(null,[object Object])@file:///C:/Dokumente%20und%20Einstellungen/Admin/Anwendungsdaten/Mozilla/Firefox/Profiles/mvu3femf.default/extensions/ubiquity@labs.mozilla.com/modules/sandboxfactory.js:734
CS_execute([object Object],null,[object Object])@file:///C:/Dokumente%20und%20Einstellungen/Admin/Anwendungsdaten/Mozilla/Firefox/Profiles/mvu3femf.default/extensions/ubiquity@labs.mozilla.com/modules/cmdsource.js:147
([object Object],[object Object])@file:///C:/Dokumente%20und%20Einstellungen/Admin/Anwendungsdaten/Mozilla/Firefox/Profiles/mvu3femf.default/extensions/ubiquity@labs.mozilla.com/modules/parser/parser.js:794
([object Object])@file:///C:/Dokumente%20und%20Einstellungen/Admin/Anwendungsdaten/Mozilla/Firefox/Profiles/mvu3femf.default/extensions/ubiquity@labs.mozilla.com/modules/parser/parser.js:375
CM_execute([object Object])@file:///C:/Dokumente%20und%20Einstellungen/Admin/Anwendungsdaten/Mozilla/Firefox/Profiles/mvu3femf.default/extensions/ubiquity@labs.mozilla.com/modules/cmdmanager.js:191
__onHidden()@chrome://ubiquity/content/ubiquity.js:213
([object MouseEvent])@chrome://ubiquity/content/ubiquity.js:64
hidePopup()@:0
hidePopup()@chrome://global/content/bindings/popup.xml:98
__onInput([object KeyboardEvent])@chrome://ubiquity/content/ubiquity.js:140
([object KeyboardEvent])@chrome://ubiquity/content/ubiquity.js:73

Quelldatei: file:///C:/Dokumente%20und%20Einstellungen/Admin/Anwendungsdaten/Mozilla/Firefox/Profiles/mvu3femf.default/extensions/ubiquity@labs.mozilla.com/modules/msgservice.js
Zeile: 88