Hi! 
Yes, I have reviewed everything you sent and have uploaded the revised document for you. I finally figured out what was going on with those commas. When I edited your document, I was using a computer that I don't normally use, which required me to edit while it was showing "track changes" in a way that I'm not accustomed to. In that format, it is very difficult to see the commas that are there once I have modified the text. So there were several commas that should not have been there, as you mentioned, but which I could not see. I have fixed all of them and have added your new summary, which i have edited. 
Thank you so much for your understanding and patience. Please let me know if you have any further concerns.