Before I purchased the licensed version, I did download the demo plugin. As I recall, saving a render was not an option in demo-mode (or was it just a low-res, water-marked version?)
Anyway, I now have the stand alone version of Octane and the SU plugin. When I attempt to save a rendering, the "save file type" pop up window is blank. If I go ahead and give the render a name and save, a file with no extension is created. Double clicking the file just gets me the Windows prompt to ID the file type so it will open.
What am I missing?
(20 minutes later . . . )
Ok. So I went back and renamed the file with a .png extension and everything is copacetic. But it does seem like a rather odd workflow . . .