Never ran into this before with prior versions of Movie Edit Pro but with#17, I'm having issues burning discs and I don't know if I'm doing something wrong or if it's an issue with the DVD burner. I get one screen that says there's plenty of room on the blank DVD and a minute later it says there's no room on the disc to burn anything. It has burned discs in the past so I'm not sure why it worked at one time and not now. These two images were taken less than a minute apart.
Does this happen everytime now that you try to burn that project (even after a reboot)?
It sounds to me like there might be other burning software involved that is causing some sort of corruption.
Just to be on the safe side, make sure you have the latest firmware for your burner (do that by going to the burner manufacture website and looking up your model number)
Then grab the latest Burn Routines from the Magix Support Page.
http://support2.magix.net/customer/en/download/tools
This might not eliminate the problem, but it would insure you have the latest there is to offer. If after doing this you still have an issue, I would look into seeing what programs are running from Windows Start-up.
Any icon that hangs out down by the clock of the computer is running when you turn your system on, it is potentially an resource killer and could be causing your error.
You can also look into the MSCONFIG to see other start-up program, and even shut them off.... but ONLY do that if you feel comfortable altering your start-up and ONLY do it from the Startup tab of MSCONFIG.