I'm using Acrobat 6.0 Pro and Quark 6.1 on MAC G5 runing OS10.2.8. In the event where I have to make a change to a PDF that I am importing, after I save my change I cannot place it. Quark says it is an "Unrecognized" version. I can place the original PDF fine, but once I re-save it fails to be recognized. I had hoped upgrading my Quark from 6.0 to 6.1 w/the patch would fix it, but no luck. The Quark forum was no help so I'm posting here to see if anyone has any thoughts. Thanks in advance for any feedback.