guava-14.0.jar look missing. Check if guava-14.0.jar exist in /libraries/com/google/guava/guava/14.0 and forge can read it.
Also, ask your host if it is compatible with forge
Forge installer automatically download already scala, if you have had this problem, is that something has blocked the download (antivirus, firewall, ...)
Use the installer, install it on a local folder, then upload all the file in the FTP. If you don't do this,, libraries will be missing.
When something doesn't work, always give the logs (ForgeModLoader-server.log on a server)
French :
GameRegistry.addRecipe(new ItemStack(RedLight, 2), new Object [] {
" X ", " X ", " X ", 'X', RedLight
});
GameRegistry.addRecipe(new ItemStack(BlueLight, 2), new Object [] {
" X ", " X ", " X ", 'X', BlueLight
});
Go learn how add a recipe.
make a new folder in your desktop, name it "server", run the installer, select this folder, click "install server" open the folder server, select all files and upload all in your FTP.