Well i had removed the beta on release, including the folders on my hd. so why would it update and reinstall the whole thing automatically,without asking me first. And also the fact that when you turn off automatic updates in steam, it reverts back to auto once steam has restarted.
Not that i could of done that anyway as i had removed the beta from my computer!
How do i prevent the installation of beta, i dont want to test no more.
Just pause the download and wait for the tests to finish. Jeesh, its not that difficult.