I am trying to knit together 3 files using this example: <http://rmarkdown.rstudio.com/rmarkdown_websites.html>

My files all share the same directory, which has been set in the RStudio build options. I literally copied the YML from the examples with my own file names. Even if I copy the examples directly, I get the same error.

I even ran the site\_generator function from the RMarkdown Github: <https://github.com/rstudio/rmarkdown/blob/master/R/render_site.R#L157>

I noticed there are options for custom generators, which I do not want. All I would like to do is be able to knit together several markdown files into a single webpage and then create a navbar with tabs for each page/section.