> I've noticed it will work occasionally, but for the most part the feature is broken.
Broken how? Waht are you expecting that you don't get?
> I can take a CS6 doc, save it to IDML, open it with ID CS5.5 and vertical justification works perfectly. And no crashes in CS5.5 when moving images that interact with a vertically justified frame.
Have you tried that same .idml file in CS6?
Do you use a font manager? Any other third-party plugins for CS6?
Broken = vertical justification doesn't vertically justify. Occasionally it will, and sometimes it will justify one column in a multi-column frame, but most of the time it just doesn't work.
The IDML file I created to test in CS5.5 has the same issue in CS6.
No font managers, no third-party plugins--just a vanilla install.
Can you post a screen shot of the same page in CS5.5 and CS6 so we can se the difference? That would make it a bit clearer, I think.
There's a patch out this morning for CS6, but I don't recall that it mentions vertical justification in the list of things fixed. Doesn't necesarily mean it won't help, though.
Nothing set to align on baseline grid I assume...?