Can't create project with Symfony 2 plugin wizard in eclipse Mars and Luna

[hassanchakroun]

Hello,
Thank you very much for this plugin.
I have one problem when I tried to create a project in eclipse Mars and Luna versions, I don't know why "Next" and "Finish" buttons are disabled. I can't neither go next for other configurations with the wizard nor finish the project creation.
cf log file and screenshot below:

log.txt

Thank you,