Hyperlink to another show does not work

[Bonnie]

When I create an action button and set it to hyperlink to another PowerPoint
presentation, and then try to click on the button, I get a message that says,
cannot open the specified file. The file is closed and in the same folder
with the one I am running. I have done this many times before with no
problem. The security is set at Medium. We tried changing it to low and still
had the same message.

 

[Bonnie]

It kept changing the name of the file and would not allow me to enter it
manually. However, I found the problem. I had named the file I was linking to
Costs #08. When I took out the #08 and simply named it Costs, everything
worked.

Thanks for your suggestion.