Stuck!

Having spent hours on my members registration and login pages I am getting so close to cracking it, but have now hit a brick wall. I am getting a warning message which I think could stem from somewhere else in my code but I have no idea where. There is a little too much code to put here so is there a kind sole out there who would take a look at my code if I email it to you to see where I am going wrong? There are two pages a login page and a new member page. Thank you