Hello to all the problem is not resolved, but I re-installed a vm apparently my OS 14.04 LTS server was not really advisable after the official doc

So I redid a vm:

OS: Ubuntu 12.04
FOG Version: 0.32

I managed without too much trouble to install FOG, I can go to the web interface. I recorded a machine (IP + MAC address). Then I started a task to upload the image to the server, it puts “the started task” but nothing happens and if I reload the page it says mssage following error: “Unable to start task”

ping works well between the FOG server and the client machien (ubuntu 14.04 LTS)

Do you have any ideas? ^ ^

Thank you again for your help