right, mine too.
they go to the base directory with all naming pattern in the name only, no directories. So i ended up with names like this -
Light_Elephant's Trunk Nebula_ISO1600_0005_Elephant's Trunk Nebula_1200sec_ISO1600_-5C_None_ha_267.3%_2017-05-14-003703.fit
Light, name, ISO should have been directories with the file name starting with 0005 etc. the \ are changed to _ and are in the name not created directories.