Object reference not set to an instance of an object..

I just tried to upload my student list to the EMBA student exit survey and received the following message: The following participants could not be added. The duplicates are verified against the CSV file, the batch below and any previously loaded batc

Hello Stacey, thank you very much for reaching out to us regarding the error you received uploading your sample (i.e., student contacts). Looking at the sample you attempted to upload it had too many field headers. It appears you had a 4th column for alternate emails addresses. Our system is set up to received CSV files with 3 column headers. "First Name", "Last Name", "Email Address".

I hope this information helps. Please contact me directly if you have any further questions, I sent you my contact information.
 
Hi Jerry,
I am having the same issue (Object reference not set to an instance of an object..

I do not have any extra columns. Other suggestions?
thanks,