I have installed hyperlinks in my slide program to use as navigational buttons within the program (go to slide # etc). They are doing mysterious things. Sometimes after I have saved my work, closed the program, then return later, and open the program they are not there! I am positive I have saved my work! Sometimes in preview mode the function still works but the hyperlink will not show so that I can edit it to give it a different function etc. What is happening? I have reinstalled the program and it is still happening. Thanks