Ah I see your issue here now that I have a url
. On install we ask the server path to the vbulletin forum. In your config-int.php set the proper path in $vbpath to your vbulletin forum and your gallery page should load.
Basically nothing is going to work until the program is operational. Your main gallery does not come up because we are looking for the
vb global.php file and can not find it.