It was about 3 years ago I posted a message here on WebmasterWorld about how to target "All Languages" in Google Adwords Campaign Settings and I got the following solution from a smart member "cyberandroid". The trick was to use Google Adwords Editor and by going through the followin steps:
1. edit language targeting
2. cntrl+click the highlighted language in adwords editor to deselect
3. click OK
4. post changes (this will change the campaign back to the old all languages option)
The trick was not to select any of the languages in the Adwords Editor, but it is not working now. Is anybody here could be able to manage this issue?