That particular horse has been flogged to death repeatedly over the last weeks. 
Please try 3.2.2 RC.

-pd

> On 13 Aug 2015, at 16:43 , Jeroen Ooms <[email protected]> wrote:
> 
> The cairo png device on R 3.2.1 gives a warning "Application built with
> libpng-1.5.18 but running with 1.6.17" and then produces a completely blank
> png image.
> 
> if(isTRUE(capabilities()[["cairo"]])){
>  options(bitmapType = "cairo");
> }
> 
> png(tmp <- tempfile())
> plot(cars)
> dev.off()
> system2("open", tmp)
> 
>       [[alternative HTML version deleted]]
> 
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-- 
Peter Dalgaard, Professor,
Center for Statistics, Copenhagen Business School
Solbjerg Plads 3, 2000 Frederiksberg, Denmark
Phone: (+45)38153501
Email: [email protected]  Priv: [email protected]

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