I'm running 3.8.0 on a test site and only wanted to display a small version of the member's avatar so I streamlined the code to this.
Code:
<img width="50" src="$vboptions[bburl]/image.php?u=$bbuserinfo[userid]" alt="Your Avatar" border="0" />
You people running vBa in a different directory will need to edit your header and navbar replacement info in your vBa settings.