Acrobat XI pro tells me "For the best experience, open this PDF portfolio in Acrobat X or Adobe Reader X, or later." Does Adobe count the versions backwards?
When I try on Acrobat XI Pro to insert a page from another pdf file into a pdf, I get following message instead of the inserted page!

Am I wrong thinking that the version of Acrobat XI Pro is more recent than Acrobat X or Adobe Reader X?
Why do I get this message constantly and why does it block me from continuing to work on my document?
