404 Errors on every page except main

I’m getting a 404 error on every page of my blog (except for the main page). I’m worried this is from copying files over from another blog and not changing the right information.

Here’s the link to the new blog: http://innewyork.com/blog/daily-nyc/

None of the archive pages, blog post pages or category pages work for me. All that shows up is a 404 error.

Here’s another of our blogs, which does seem to work: http://innewyork.com/blog/culturedpearls/

Please let me know if you need any more information/have any questions! I am new at this.