Wow! Thank you all so very much for each suggestion/tip!
This has certainly been a frustrating project for me as I haven't been able to figure out what/how/where things went wrong. I will certainly apply the suggestion of using stitch markers (I have never really had a use for them before, I guess now is the time to start using them).
RE: Taking a photo....
This is the scarf before ripping it out...again.