Unfortunately, saving Module Windows has not been implemented. (We fixed the bug that produces the error when choosing this, but it doesn’t allow saving yet). It is on our list, but it is not as simple a fix as you might assume. Read more here, if you care to: github.com/CellProfiler/CellPro … t-33718926
Another tack is for us to retain the image for downstream saving in SaveImages, but this too hasn’t been implemented: github.com/CellProfiler/CellProfiler/issues/201.
The simplistic, non-high-throughput workaround is to click the save button in the toolbar of the module (looks like a floppy disk) and name the output. The only other route I could imagine, barring coding it yourself, would be to use RunImageJ and create a clever macro to save a screenshot of the module window. Though I expect this would be troublesome as it would be very sensitive to whether the display window was drawn yet, what cycle was being processed at that time in multi-processing scheme, etc. In any case, the proper implementation will have to wait for a while on our end, as far as I know.