reconstitute blob as matrix

Hi All,

I'm trying to reconstitute a blob of data as a 32x32 array - I'm not getting any compiler warnings (using VC++ 2008), but my program is crashing. Can anyone see what I might be doing wrong here:

Code:

	if(pinStorage.isUpdated()) // if the blob is updated
	{
		typedef float (*floatArray)[32][32];
		floatArray ptr = (floatArray) pinStorage.rawData(); // get blob as array of pointers
		for (int y = 0; y < 32; y++)
		{
			for (int x = 0; x < 32; x++)
			{
				float tmp = (*ptr)[y][x]; // get variable pointed to?
				patternArray[y][x] = tmp; // assign to private variable. This line causes crash.
			}
		}
	}

Thanks in advance,
Jonathan.