This is not a regular PDF, it is a portfolio, a collection of separate things, not just a run of pages. What you've inserted is a normally invisible cover page. What did you want "inserting" it to do with all these things?
thanks for the quick reply.
It's is a PDF portofolio that I use to regroup several pdf-documents (initialy created with Adobe XI from emails in Outlook) for having an archive and quicker research possibility. It allways was working, now for all page that I try to add, I get this message.
I don't know if I can paste the system report in this message as it is public, but I can send it to you by mail.
Inserting TO a portfolio is one thing. The problem here is the "page" you are tiring to insert. It isn't a page, it's a portfolio.
Oh gosh yes
The answer is so easy stupid me.
I didn't even notice that the problem was the file I was trying to add was not saved in the right format.
Thanks a lot for your precious help