[wp-hackers] Featured image functionality dissapeared from custom post types after upgrade

[andre at pixelplexus.co.za]

I'm completely baffled. All 1088 of the cutom posts return true for
has_post_thumbnail and get_post_thumbnail_id returns the correct id.

But for about 600 of them get_the_post_thumbnail returns blank.

Any pointers or ideas would be very much appreciated :-|

Thanks

André

PS. clarifying the below: On the custom post's editing screen the featured
image doesn't show in the meta box. But the fact that the 'use as featured
image' link is missing from the image in the media gallery tab seems to
sugest the right image is set as featured but the image is somehow
'borken'.


> Hi
>
> I see a couple of mentions of similar problems on the forums but no detail
> of what the problem might be or how to fix. So asking here and will start
> digging.
>
> A site that uses featured images on a custom post type. After upgrade to
> 3.4.1 when you go to the edit screen for *some* of the custom posts, the
> featured image is no longer set. If you click on set featured image there
> is still an image listed in the 'gallery' tab. However there is no 'set as
> featured link' and the image thumbnail seems blank. Full size lists the
> image size as (0 × 0). (so suspect something broken in the db :-| (Got
> exactly the same result on a clone of the site)
>
> Will go through disabling all plugins etc. but its weird that it was
> working perfectly before the upgrade.
>