I am having this exact same problem. What am I staring at that I am missing?
my error in firebug:
return value.dateFormat('Y-m-d H:i:s');
value.dateFormat is not a function
My datetime stamp is the same as benny's, so I am obviously missing something stupid.
I mean if I comment out the renderer, It displays data fine. Just trying to understand the grid-php example completely and why it isn't working for me.
header: "First Call",