Ref: SNS-HDR Pro 2.0.0.6 Beta with dcraw9.26.1.1
Perhaps this will be of help regarding file name changes:
1) When a Fujifilm X100T RAF file is 'Drag-Dropped onto a Desktop program icon'; then converted, merged, and Default tone-mapped it will become as indicated when executing a "File Save as":
DSCF1221.RAF --> dscf1221-HDR.tif
[change to lower case root name]
2) When a Canon EOS-350D CR2 file is 'Drag-Dropped onto a Desktop program icon'; then converted, merged, and Default tone-mapped it will become as indicated when executing a "File Save as":
IMG_1696.CR2 --> IMG_1696-HDR.tif
[no change in root name]
...den...