I have been trying to register a bunch of dark frames taken with a Fuji DSLR in RAF format using the set calibration dialog. Here's what happens: If I try to select a directory containing RAFs and then select one of the generate options, nothing happens. If I try to add a group and then add a RAF file to it, I get a warning dialog with no message. If I try to add a bunch of RAFs to a group, it crashes. OK, so it doesn't support RAF files for calibration. So next I open each RAF in turn (they look fine) and save them as FITS; I try every option of bit depth and stretch/no stretch. But when I try to register the FITS files for calibration, I get the same problem. I should add that there's nothing in the log, even with debug logging enabled. Am I just missing some vital step before doing the set calibration?