Impossible call 'patch' inside onkeydown handler?

[Andrea V. <and...@gm...>]

Hello!

I got a strange behavior with build 179 and this simple code:
--------------------------------------------------------------
cubic {
	"skyFront.jpg", --front
	"skyRight.jpg", --right
	"skyBack.jpg",  --back
	"skyLeft.jpg",  --left
	"skyTop.jpg",   --top
	"skyBottom.jpg" --bottom
}


onkeydown (
    function(key)
      p_ref=patch{nx=1,ny=1,nz=0,nw=1,nh=1,angley=90,image="left.png"}  
      return false
   end
   )
--------------------------------------------------------------

When you press a key, you will get the message:

    Error running local keydown handler:
    1/node.lua:13: attempt to call global 'patch' (a nil value)

if I substitute patch with pipmak_internal.patch, it seems to work fine,
for this simple example,
but using a more complex code, Pipmak crash in that point...

With the debug I have seen that the error occur in images.c
----------------------------------------------------------------------
void releaseImageFromGL(Image *img) {
	img->texrefcount--;    /// <--error occur in this point
	if (img->texrefcount <= 0) {
		glDeleteTextures(1, &(img->textureID));
		img->textureID = 0;
	}
----------------------------------------------------------------------

What do you thinking about?
Is it a problem of my build, or really I cannot define a new patch inside
a keydown handler?

Bye.
Andrea