Hello Sir,
I am using ARTIO JoomSEF component V.4.0.0 with Joomla V2.5, and already have installed Falang Component as want to run my site with multiple languages.

Regarding the subject, when i have installed that component and from the global configuration in Backend if i am enabling the Search Engine Friendly URLs option to Yes, at that time i am getting
localhost/test-joomla/test-joomla/en/component/content/category

url at the backend site instead

localhost/test-joomla/

that mean the url is duplicated. when i disabling the component remains the same issue, unintalling the compoents works fine, again installing this compoent causes the same problem again.

Requesting to the developers to look into the matter,
and please Response ASAP.

Thanking You in advance.