When I go to edit my K2 categories and select a template, none of my templates that I've added today show up. I've added templates in the past and I see them in the dropdown, but nothing that I do today makes any difference. It is like K2 has cached the list and won't clear it.
Here's what I did: I copied the "default" folder from the components/com_k2/templates 

...over to...

templates/mytemplatename/html/com_k2/templates/

I've tried copying it over and over, renaming it. Nothing works. When I go to K2/categories, and click the dropdown for Select A Template, they are not there.

Ideas? Thoughts?  Thanks in advance. 

That looks correct. Do you have some k2 templates that are working on this site?

I don't know what the deal was, but I found a work-around. instead of taking the templates folder from the components/com_2 folder, which never seemed to work, I just made a new folder, and copied over the individual files. Apparently K2 didn't like something about the copied folder... but a newly created one worked fine? weird.

thanks for the help.