I had similar problem with not loading the css. There are two solutions: Either make it internal (from the vbulletin options) or add the following in the photoplog options:
at the relative links add as a last line: href="clientscript/vbulletin_css/
and also add as a last line at the absolute links: href="http://www.nameofyourforum.com/forumdirectory/clientscript/vbulletin_css/
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