Flex: Unable To Open locale en_US or fr_FR

If you want to create a localized application you may find yourself in a strange situation when you did all the steps like in the book, but you continue to receive the “Unable to open locale xx_XX” error messages.

To simulate a fix on this issue we will take the example of adding French to your app.

Basic steps:
- The first step is to create a fr_FR folder under the /locale/ one exactly like in the Flex documentation and then add the translated bundle.properties file.
- The second step is to add the compiler options: -locale en_US,fr_FR

Extra steps you need to make in order to get rid of the ugly “unable to open locale” error message:

1. goto the following path :

<flex-install-folder>/sdks/<current-sdk-folder>/bin/

for windows it’s: C:\Program Files\Adobe\Flex Builder 3\sdks\3.2.0\bin\

2. Execute the following command:

> copylocale.exe en_US fr_FR

That’s all, hope we helped you!
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The TiMeister Team