ActionScript 3.0 :: ShaderJob Returns Different Results?

When I use it with either byteArray or Vector as the input and either as the output, it returns the first few results correctly, then gives me either nonsense values or zeroes. The following shader takes values, returns the second number plus the third for the first value, a zero for the next, and the output coordinates for the last two numbers. The channel size is therefore 4. The length of data is 56 (divisible by 4).here is what I have in the evaluatePixel function:

Code:

dst = sampleNearest(src, outCoord());
dst.r = dst.g + dst.b;
dst.g = 0.0;

[code]....

and then, as you can see, fine again after 47. Changing the length of data to 80 is the same, only after 31, the values remain nonsense instead of eventually correcting themselves.That list is just a trace of input and output.