I don't have a problem, this is really a request for enlightenment.
When I publish as a pdf the menu against compatibility lists acrobat 4, 5, 6, PDF/X-1, PDF/X-1a, and shows 5 by default.
If I convert using 4, 5, or 6 I get logos, clipart etc as negatives. /X-1 and /X1-a work ok. But it used to convert ok using the default one shown, v5. I have reader v8 on my machine.
Is the above 'normal' behaviour, i.e. v4,5 and 6 don't work?
Can I set the drop down box to show PDF/X-1 by default on start-up?
Can PDF/X-1 be read by any version of acrobat reader?
Does Acrobat v9 work with PPX3?
I'm running Vista 32bit - but I don't think this is an issue.
I've spent my happy hours investigating.
I've cured the problem by copying and pasting the logos from PP into PhP and then, without doing anything to the images, copying and pasting them from PhP back into PP.
The pdf conversion now works correctly.
Life is full of mysteries - so onwards and upwards