Full_Name: Paolo Sonego Version: 2.4.0 OS: Windows XP Pro SP2 Submission from: (NULL) (140.105.9.245) This bug (from the definition in the R FAQ ("If a command does the wrong thing, that is a bug.") seems to me an inconsistent, but annoying disregard: plot whatever image you want, e.g.: hist(rnorm(1000), col = "blue") When you try saving the image from the window dialog menu: File > Save as > Png... (PDF..., etc.) in the pop-up dialog appears a 'Save as Type' form with the Png files (*.png); typing the name of the image file without extension (e.g image1) will produce a file without automatic png insertion at the end, i.e., file name will be image1 vs. image1.png (the 'right' output imho).