While trying to post some example plots to this forum, I right-clicked on a plot in the result display, selected Export, and then selected type and resolution. I was able to export an EMF plot with no problem, but an attempt to export BMP or PNG files gave me "Export Failed!" with no more details. There were no files of the same name (including extension) present, and there's plenty of disk space.
Is this a known problem? It's frustrating.