I might be mistaken, but over a year ago, I seem to recall being able to save graphs in a variety of image formats without issue.
You aren't mistaken. DPlot has had the ability to export BMP, GIF, JPG, PNG, and TIF files for several years, and still does. However, the image export plugins are optional components of the setup program. If you didn't elect to install those plugins then you won't see the corresponding format in the "Save as type" box.
According to DPlot V 2.2.6.8 help file, saving in image formats (now?) requires the use of a plugin, specifically FreeImage.dll.
This feature has always required file export plugins, but FreeImage.dll isn't it. FreeImage.dll contains functions that are called by the image export plugins. Unless you've manually moved files around you
should already have a copy of FreeImage.dll in the same folder where dplot.exe is located. You will need to delete the copy of FreeImage.dll you placed in \plugins\fileexport, else you'll continually get that error message.
So how do I save graphs in image formats now??
Just run the setup program again and be sure to check the appropriate image export checkboxes. (Those components are checked by default the first time you run the setup program, so unless you unchecked them... perhaps your trouble is remembering how to save those images? In that case just select File>Save As and select the image type in the "Save as type" list.)
