Answered
I created a PDF which is accessed on a website. In Document Properties, under Initial View, Navigation tab, I specified "Bookmarks Panel and Page", so that the Bookmarks panel would always appear when the document was opened.
For most users, most of the time, it does, but for some it does not. They are all using Acrobat or Acrobat Professional 8. For some users, it appears sometimes, but sometimes not.
Am I missing something in the setup of the document that would cause this?
Lori Kassuba is an AUC Expert and Community Manager for AcrobatUsers.com.