JS console not found...

Hi All

Trying to use FF JS console, gives error

"Firefox can't find the file at jar:file:///E:/PortableApps/PortableApps/FirefoxPortable/App/firefox/chrome/toolkit.jar!/content/global/console.xule."

was not able to open toolkit.jar, received error: "---------------------------
Java Virtual Machine Launcher
---------------------------
Invalid or corrupt jarfile E:\PortableApps\PortableApps\FirefoxPortable\App\Firefox\chrome\toolkit.jar"

toolkit manifest reads:

"content passwordmgr jar:toolkit.jar!/content/passwordmgr/ xpcnativewrappers=yes
content global-region jar:toolkit.jar!/content/global-region/ xpcnativewrappers=yes
content global jar:toolkit.jar!/content/global/ xpcnativewrappers=yes contentaccessible=yes
content global-platform jar:toolkit.jar!/content/global-platform/ platform xpcnativewrappers=yes
override chrome://global/content/nsTransferable.js chrome://global/content/nsDragAndDrop.js
content mozapps jar:toolkit.jar!/content/mozapps/ xpcnativewrappers=yes"

anyone know anything about this??
much appreciated