I am doing the same, converting from vbGallery to Pro 7.01 version for the best integration with vb4.
I have created a test forum. Where I have copied my current forum with the same version of vb and vbGallery - it's working fine and without any problem.
Then I have installed the Photopost Pro on the same forum, although in another directory called /photopost/ (as described in the guide).
The New Gallery is also working fine.
Then I downloaded the Importer script from:
and ran though the procedures - everything seems to work ok.
It told me that there are aprox. 45500 images in the gallery, which is very correct.
After alle the steps, I can view the new Pro Gallery - but here starts the weird things...
No ALL images are visible - very few are visible - other cannot be displayed. There is only a cross on them.
The Category list is showing very very weird... I have almost 239 categories in my vbGallery - it's not showing anything in the Pro Gallery.
All the members categories are completly empty....
Clicking on any given date in past in the calendar, some image are displayed, others not....