New Post: GRID projection

I'm building a MapWindow 4.8 plugin and want to create a animation with several grids and a timer. My grids are in ASCII format.
So, i'm adding and removing the grid with layers.add and layers.remove.
My grids are created by my code, and I set in the header the grid's projection.
The problem is that every time that I add a grid layer, a MapWindow information window is shown saying that my grid file has no defined projection, despite the previous set in the header . This popup needs the user intervention, and this prevents the animation.
I also tried to create a prj file with the same name of my grid file, but without success.
So, is there a way to set the grid's projection or prevent the window?

That is the ASCII of my created grid file:

NCOLS 18
NROWS 11
XLLCENTER -52.550000
YLLCENTER -29.800000
DX 0.15
DY 0.15
NODATA_VALUE -9999
-9999 -9999 0 -9999 -9999 0 -9999 -9999 0 0 0 -9999 -9999 -9999 -9999 -9999 -9999 -9999
-9999 -9999 0 0 0 0 0 0 0 0 0 -9999 -9999 -9999 -9999 -9999 -9999 -9999
-9999 -9999 0 0 0 0 0 0 0 0 0 0 0 -9999 -9999 -9999 -9999 -9999
-9999 -9999 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 -9999
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
-9999 0 0 0 0 0 0 0 0 -9999 -9999 -9999 -9999 -9999 0 0 -9999 -9999
-9999 -9999 0 0 0 0 0 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 0 -9999 -9999
-9999 0 0 0 0 0 0 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999
-9999 0 0 0 0 0 0 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999
-9999 -9999 -9999 0 0 0 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999
PROJECTION
NOTES