Hi Lauren,
Just left you an email but I'll respond here also just in case somebody else runs into the same issue or has thoughts to add. First thing I would suggest is to try moving the "Trial" column such that it would be to the immediate right of the "Block" column. As it is now, the "comment" columns are separating the two and possibly causing a parsing error as the Block and Trial columns are expected to always be next to each other.
Blair