Problem with render

Hello All,

I have a strange probrem. When i try to create a new "Enseignan" with
an error. I have this error

Template is missing

Missing template /enseignants/#<Enseignant:0x31638f4>.html.erb

However, in my code i have

render :

my controller

I use the edge.
render :action => new

Thanks for help

If i test with
render :text => "text to render..."

the render working ..:frowning: