Are you using the neural network indicator? If so, then please refer to the following comment from the top of the NNCompute function:
"This function can accomodate up to 32 inputs, up to 100 hidden nodes,
and a maximum look-back length of 500 bars.
To handle larger networks, the array sizes can be increased."
If you look at the array sizes in the function, you can see where you may need to increase the numbers if your neural network exceeds the current limits. Otherwise, you can change the settings in Builder so that it will be less likely to result in a network that exceeds the bounds.
If you're not using a neural network indicator, I would need to see your code to see what the problem might be.
Mike Bryant
Adaptrade Software