Hello Peter,
please find the location of the Custom Data Folder in your "shared" (OS X) and "shared documents" folders (WIN).
We have removed the option of creating a personal Custom Data Folder to make things simple (no access restriction or permission troubles), but it has caused more confusion instead, so we will go back to the "old" system with the next build.
For now, please copy your custom presets to the default location and everything will be fine.
Of course you find more information in the VE manuals, including Screenshots of the location.
Sorry for the confusion!
Best,
Paul