Hey Uncle Cheese, Can I write here about the amends I made to DOM?

facebox to use most of the screen (making it slightly more pleasing to the eye)
submit button handles better multipul uploads (instead of a hugh string for each item)

Iv attached my amends to the r343 -hope somebody finds this useful.
http://urcms.net/dataobject_manager.zip

Also can I ask what is needed to be done for many images per object? ie something like;

static $has_many = array (
'gallery' => 'Image'
);

Thanks

My submit button had the title;
"Save and add Main Image, Line Art Image1, Line Art Image2, Line Art Image3, Line Art Image4, Line Art Image5, Line Art Image6, Cadfile, Sibdata, Image Gallery 1, Image Gallery 2, Image Gallery 3, Image Gallery 4, Image Gallery 5, and Image Gallery 6"

-which used to create a huge button and scroll bars.

So using the update it will now be;
"Save and add Main Image, Line Art Image1, and Line Art Image2 And 12 other(s)."

Hopefully this makes sense

Hey UncleCheese

While you're updating stuff, here's another patch for you:
http://silverstripe.org/dataobjectmanager-module-forum/show/260986?start=128#post277576

Actually, Banal, I'm having a hard time with this one. In my rev of DOM, I believe I have correct markup.

After the closing div for "per-page-control", there should be three closing divs, followed by $ExtraData.

<div class="per-page-control">
<% if ShowAll %>
<% else %>
$PerPageDropdown
<% end_if %>
</div>
</div>
</div>
</div>
$ExtraData
</div>

is that what you have? Also, are you seeing the issue in RelationFileDataObjectManager?