I had the same problem with the code of the Wikipedia in a 64-bit Windows 7.
The gif works fine if I use the executable located in bin\x64 instead of bin, which produces the ugly gif eg, in a cmd: <the_R_path>\bin\x64\Rscript.exe example.r I realised the solution using the --verbose flag Sorry about my english -- View this message in context: http://r.789695.n4.nabble.com/why-I-could-not-reproduce-the-Mandelbrot-plot-demonstrated-on-R-wiki-tp2591429p3678522.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.