The vi uses lvanlys.dll found
in
\LabVIEW 6\resource\lvanlys.*
the dll could be corrupted. Try to reinstall LV 6
From the help,
the vi does
"
Determines the scale and offset and then scales the input array, X, using these values. The elements of the output array, Y, are determined by the following equation:
Y[i] = (X[i] - offset)/scale
where
scale = 0.5(max - min)
offset = min + scale.
"
you can implement it on your own