Tundra
The import script successfully worked from what your describing.
Photopost vbGalleries file structure is exactly as you have posted
mysite/gallery/files/8/0/2/5/3/cd2afd3d0a25d4efd5c022791a06cf8a_14384.jpg
If you look at any photo uploaded to vbgallery its structure is the same.
Member's Categories - Reeftalk vBGallery 006 - Reeftalk vBGallery
The userid is split and the filepath is exactly as you note so nothing appears incorrect from what I can see.