A key function of Adobe Acrobat Professional 7 (version 7.1.0) has mysteriously stopped working. Until yesterday, I have been able to "enable" the "Typewriter" tool for use by one who only has Acrobat Reader, which permits such a person to provide comments and feedback on draft documents and to reply to questions I pose in my own comments. This function abruptly ceased, with the program generating the message "You do not have permission to write to this file," after it has created the new file but before it enables the Typewriter feature in that new file.
Some notable circumstances:
(a) I am the author of all involved files. Neither the source file nor the new file has any "security," and neither is designated as "read only." The result is the same if I try to enable the Typewriter in a file for which I've previously done so successfully--BEFORE the impasse developed.
(b) I have tried using the control panel "Add or Remove Program" feature to repair the application. No change after the "repair."
(c) The operating system is XP Professional (Version 2002, Service Pack 3), and I'm not aware of any affirmative changes to either the operating system or the Acrobat program.
(d) The Typewriter tool does continue to work normally within my own full version of Acrobat; I just can't confer the power to use it on others.
(e) Norton Internet Security 2009 is current. The "One Button Touch" fix within Norton SystemWorks doesn't fix this.
Thanks in advance for any assistance provided.