You're running v2.9, eh? That interesting considering the latest stable release is 2.3.3 and from there it's going to go straight to 3.0. Where'd you find a version 2.9?
I think what AJ is trying to tell you is that you have not yet editied the header-inc.php file in PP root. I believe this will solve your problem. (In addition to installing the templates correctly)
This is what you need to uncomment in header-inc.php
Code:
// vBulletin Integration
// Instead of using the static header/footer file specified in the Admin options
// panel, you can use your existing default vBulletin header/footer. Just change
// $vbpath and $pppath below to the proper full paths and remove the "//" slashes
// from the beginning of the 17 lines of code below. If PhotoPost has an odd
// background color or squished width, you will need to edit vbulletin's default
// "header" style input box / template and change "{pagebgcolor}" and "{tablewidth}"
// (near the bottom) to your preferred background color and table width, respectively.
//$vbpath ="/full/path/to/forum"; // changeme
//$pppath ="/full/path/to/photo"; // changeme
//chdir($vbpath);
//require("global.php");
//ob_start();
//eval("dooutput(\"".gettemplate('headinclude')."\",0);");
//$bodytag="<body>";
//echo dovars($bodytag,0);
//$vbheader="<head>";
//$vbheader.=ob_get_contents();
//$vbheader.="</head>";
//ob_end_clean();
//ob_start();
//eval("dooutput(\"".gettemplate('header')."\",0);");
//$vbheader.=ob_get_contents();
//ob_end_clean();
//ob_start();
//eval("dooutput(\"".gettemplate('footer')."\",0);");
//$vbfooter=ob_get_contents();
//ob_end_clean();
//chdir($pppath);
As for installing the template hack correctly, do not use the provided installer. It's got some issues.

If you used it, just use it again to uninstall the templates. From there, download your style file and add the contents of "ppstyle 4.5.txt" before the final set of pipes "|||" in the style file. Use the CP to upload/overwrite the newly edited style.
With any luck this will solve your problem.
Like I said before, your bug is (was) the same as mine. It can be worked out if you just have a little patience.