How to copy ppt slide backgrounds

[crabby80]

Hey guys

I'm developing an application that creates ppt files on the fly by copying slides from chosen presentation(s) into their own custom presentation, so far so good

This is the code that currently copies the slide from the source to the target

$source->Slides((int)$slideNumber)->Copy;
$target->Slides->Paste($counter);

//Copy slide design
$target->Slides((int)$counter)->Design = $source->Slides((int)$slideNumber)->Design;

//Need to copy slide background 

Most of the time this seems to be working great, but the odd slide is not getting copied and I think I've narrowed it down the slide background not being copied.

Could anybody advise on how to do this, or does anybody know a good reference guide?

Any help would be much appreciated

Thanks in advance

Crabby

[crabby80]

COM object