knitr figure produced twice (with R 3.0.0)

Question

I have an Rnw file, which worked fine before upgrading to R 3.0.0 (and knitr 1.2). I found a similar problem described in knitr problem after update to R 3.0.0

I followed the answer, to update to knitr 1.2.4 (rforge version). The problem persists!

Now, one chunk causes a problem (and one chunk only), which produces two figures. The chunk is called plotc, and both plotc1.pdf and plotc2.pdf are produced. After knitting, pdflatex throws the error:

!pdfTeX error: pdflatex (file c:/repos/uws-r-manual/figure/plotc1.pdf): PDF inclusion: required page does not exist <0> ==> Fatal error occurred, no output PDF file produced!

If needed, I can give access to the bitbucket repo if someone wants to reproduce/fix this problem.

Answer 1

I have fixed the problem in the development version (v1.2.5). See here for instructions on installation. It will go to the stable version 1.3 eventually.