I am still getting this error:
Error 908: The permission READ_EXTERNAL_STORAGE has been denied. Please enable it in the Settings app.
But know I don't think it is related to the ASD. In this threat, @Anke mentions that you can't specify the saving directory. Si, its weird that I can write a file there (without asking for permissions) but then I cannot read the file I just created, even if I try to ask for permission.