If you are using Insert > movies and sounds the most likely problems are the
video is located too deep in the folder structure so the path to it is too
long. Move it into the same folder as the (saved) presentation and have this
folderhave a short path.
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments. After that, you can post your question and our members will help you out.