Your gallery definately does not look like ours here I am using vb4.
A community photo gallery - ReefTalk Gallery
Where is your category list? Right off the bat I see that issue which can not be explained. So let me go further.
Weed Star Dubb Bubb V2 - Marijuana Pictures, Photos & Videos - Grasscity.com Media Gallery
Your photo display is not version 8 either
Given what I am seeing your issue is easy to explain. You have uploaded all the complete files.
My suggestion would be to to your photopost directory via ftp. Delete all main PHP scripts except the 2 config files. Delete the stylesheets and templates directories and then upload the new Photopost 8. Maybe you have an issue files are not being overwritten can not say. The only thing I can say is it looks like your using PP8 php files with older templates.