Thnx Richard but it appear another problem i have a exception when i run ant locales :
build-locale:
    [echo] Locale dir is /home/amine/bigbluebutton/BBB/bigbluebutton/bigbluebutton-client/locale/fi_FI. Extract locale name.
    [echo] Locale name is fi_FI
    [echo] Building fi_FI
    [echo] We already have a copy of the framework locale. No need to copy /home/amine/tools/flex/frameworks/locale/fi_FI
    [echo] Compiling locale fi_FI
    [echo] Start building fi_FI
    [echo] **********************************************
    [echo] * Did you check bundles.txt and made *
    [echo] * all resources listed here? *
    [echo] **********************************************
   [mxmlc] Loading configuration file /home/amine/tools/flex-4.5.0.20967/frameworks/flex-config.xml
   [mxmlc] Required RSLs:
   [mxmlc]   Â
http://fpdownload.adobe.com/pub/swz/flex/4.5.0.20967/framework_4.5.0.20967.swz with 1 failover.
   [mxmlc] /home/amine/bigbluebutton/BBB/bigbluebutton/bigbluebutton-client/client/locale/fi_FI_resources.swf (45944 bytes)
Caught an exception while logging the end of the build. Exception was:
java.lang.OutOfMemoryError: PermGen space
   at java.lang.Throwable.printStackTrace(Throwable.java:643)
   at java.lang.Throwable.printStackTrace(Throwable.java:634)
   at org.apache.tools.ant.Main.runBuild(Main.java:878)