The new mac update file doesnt seem to open properly. get an error that its opening in read only or something, and wont actually open
Can you send at least a screenshot of the error?
You should do exactly what it tells you to, move it to another directory. Move it to applications folder for example. You're trying to launch it straight from the download folder, where system can't overwrite things.
i did move it to another drive and got the same message but ill try another next time i try it