Right. I'm not sure why that's happening then.
I have one last suggestion, though I really doubt that this is what's causing the problem. You can try to go to your main FeralHeart folder and open up the "resources.cfg" file in notepad (if you're going to edit it, back it up first). Make sure that you have these lines located somewhere under the [General] section.
FileSystem=my_presets/preset_1
FileSystem=my_presets/preset_2
FileSystem=my_presets/preset_3
FileSystem=my_presets/preset_4
FileSystem=my_presets/preset_5
FileSystem=my_presets/preset_6
FileSystem=my_presets/preset_7
FileSystem=my_presets/preset_8
FileSystem=my_presets/preset_9
FileSystem=my_presets/preset_10
FileSystem=my_presets/preset_11
FileSystem=my_presets/preset_12
If you do, then I really have no clue why this is happening to you.
The only other solutions I can think of is to either move the preset to another folder or have someone else export it for you. If you don't want to move it, I would be willing to export your preset for you, though you'd have to send me the files. Or you can have a friend do it.
I'm sorry that I can't be of more help. Maybe someone else has some ideas.