Please point me in the right direction

[Lynne]

For others, here was the proposed fix in the bug report - http://tracker.vbulletin.com/browse/VBIV-10487 :

Proposed fix (if you can try it... )
Open the ./includes/xml/cssrollup_vbblog.xml file and replace this:

<template>attachment.css</template>
<template>blog.css</template>
<template>lightbox.css</template>
<template>postbit-lite.css</template>

By this:

<template>postbit-lite.css</template>
<template>blog.css</template>
<template>lightbox.css</template>
<template>attachment.css</template>

After this change, rebuild directly all styles to apply the fix. I tried and it fixes it for me.
Cause: the order in the BLOG template and in the cssrollup_vbblog.xml file about CSS template name is not the same.