Not sure why I have duplicates of these, but for the RTAS version of Expand, the presets are located here:
Macintosh HD/Library/Application Support/Digidesign/Plug-In Settings
In these 2 folders:
Xpand!2
XPand2
For the AAX version, the presets are located here:
Macintosh HD/Users/username/Documents/Pro Tools/Plug-In Settings
In these 2 folders:
Xpand!2
XPand2
If you have those 2 folders in one location, but not the other, I would try
copying those 2 folders to the other location.
I'm running Pro Tools 11.1.2 on Mac OS X 10.9.2, and removed the Pro Tools 10 application when I went to Mavericks. I left some of the old folders from PT 10 on my system for future reference (posts like this one
)
I'm not sure whether you are using the RTAS or the AAX version of Xpand2 if you are on the latest version of Pro Tools 10.