Varinder,
It appears to be happening on all files if I try to put my document number on the bottom. If I only have one page to do, it appears fine, then I save it to the new file name to match the document number, as that is how I store them, Acrobat crashes. Thankfully the file change does save, but then I have to re-open the file again to finish working with it.
I have tried this on several different documents including one that I scanned my self at my desk, and the result is the same on all files. One thing to point out though is that I am the only one in the company with Acrobat XI. Being the Document Administrator I was the first one upgraded to this version so have had concerns about older PDF format conversions.
Unfortunately I can not send files I am working on as they are company specific. However, I can try to reproduce the problem on a generic document and possible send that a little later in the morning. I also still have a few more document processes to try like converting a word document to PDF then adding my document number. I have not tried that yet.
Curt Johnson
Document Administrator
R&D Molders, Inc.