Under android marshmallow and lollipop on Sony Z3,Z5 & tablet Z. The same happens on every device.
I can get qdslr to access the sdcard under the 'folder for local images' setting, but it will not allow me to create a folder, nor will it download files from the camera to the external sdcard. I have tried both WIFI and USB. I have checked the app permissions, and modify/delete SD card contents is allowed. Things work fine if using the internal memory.
The camera is Nikon D750, and qDlsr is version 3.5.1.
Any ideas?