Gallery Assist (GA) folder structure.
The folder structure of GA is easy to understand. It depends on the following cases:
ImageCache not available
A global gallery folder (gallery_assist) wich contains all galleries created through GA.
A gallery user folder (called with the User-ID) wich contains the galleries belongin to the respectively user.
The gallery preset folders.
Contains mini thumbnails for the GA pager.
Contains the thumbnails of the gallery so long Gallery Assist ImageCache is not installed.
Contains the preview images of the gallery so long Gallery Assist ImageCache is not installed.
Thumbnails and preview images are no longer produced from GA.
At this point is ImageCache responsible for this task.