Insert From PDF IS compatible with mac and windows, there's most likely something you've done that makes it error out.
Do you have any custom menus installed that may be blocking the command? That's usually where error #3 pops up.
Make sure you don't have two instances of the same field on the layout you are using to insert the PDF.
Have you tried just "image:" as the prefix?
Can you manually insert the PDF into the container field? If not you probably have some privilege issue with a privilege set, custom menu or your login on the windows computer.