Emulator

Game Name?
Super Mario Galaxy US and JP, Super Mario Galaxy 2 US, Kirby's Return to Dream Land US. Those are the games I currently have Dolphin saves for.

Game ID?
RMGE, RMGJ, SB4E, SUKE.

What's the problem? Describe what went wrong in few words.
When I chose Export All Wii Saves, I got "Found 4 save files" then "Successfully exported 0 saves to C:/Users/<me>/Documents/Dolphin Emulator/private/wii/title/". Indeed, when I checked that directory, I only saw the save files from a previous export that I had done in the past (with an older Dolphin version).

What did you expect to happen instead?
"Successfully exported 4 saves" and actually having my saves exported.

What steps will reproduce the problem?
Have some Wii save files on Dolphin. Go to Tools -> Export All Wii Saves. I haven't tested whether the specific games make a difference.

Dolphin 3.5 and 3.5-367 are old versions of Dolphin that have
known issues and bugs, so don't report issues about them and test the
latest Dolphin version first.
Which versions of Dolphin did you test on?
Dolphin 4.0-7365-x64.

Does using an older version of Dolphin solve your issue? If yes, which
versions of Dolphin used to work?
Dolphin 4.0-5732-x64 does not have the issue; I was able to successfully export my save files with the exact same games.

What are your PC specifications? (including, but not limited to: Operating
System, CPU and GPU)
Windows 7 64-bit
Intel Core i7-3630QM @ 2.40GHz
Nvidia GeForce GTX 660M

Is there any other relevant information? (e.g. logs, screenshots,
configuration files)