Well yes you can do that you just can not merge two galleries like pro and vbgallery into one.
You can do this.
1. Install vbgallery.
2. Import photopost pro content into vbgallery
3. Import the vbalbums profile photos into vbgallery
That works fine because thats a totally different thing. You can not merge two galleries into another meaning pro and vbgallery because they all have category id's and photoid's and you cant insert values which already exist. The
vb profile thing is something different that does not have category id's and as such we simply dump that stuff into vbgallery with new id's and assign them to specific member categories etc.