How to re-run Bibtex on the file(s) - RSweave; KnitR

Question

I have a document called Code.Rnw where I write my document in and I'm using Sweave and Knitr to compile it.

For my bibliography I use biblatex. My setting is the following:

\usepackage[bibstyle=authoryear, citestyle=authoryear, backend=bibtex8]{biblatex}
\bibliography{bib}

Unfortunately my whole header is very long so I won't post it.

Until now the bibliography file (bib.bib) was printed in the PDF output without any problems but suddenly the following error occured:

Please (re)run Bibtex on the file(s):(biblatex) Code(biblatex) and rerun Latex afterwards.

Actually I don't have a clue how to (re)run Bibtex especially in the environment with Sweave and KnitR. I can't run my bib file or any other file seperatly; except for my main Rnw (Code.Rnw) file of course. How do I deal with the situation?

Thanks

Answer 1

For anyone having a similar problem. I found, that my Code.BBL file wasn't updating anymore when I compiled the document. For now the solution is the following: Update the bibliography file (in my case bib.bib) and save it. Delete the Code.BBL file (yours will have the name of your Rnw document) and then compile the Code.Rnw (or whatever your main document is named) 2 times. This creates a PDF output for me.