I have not received any response to this question but figured out the problem myself. It appears to be a problem within Turbotax. For the federal filing, I reported it as a 1099B and included the state withholding because turbotax asked for the information there. However, Maine does not consider this a 1099 withholding so they rejected it. I was able to get it through by removing the state withholding from the Federal 1099 and adding it into Maine's 'other estimated taxes paid'.
