I had Nero 126.96.36.199 installed on my system.
Yesterday I downloaded the new version of Nero (188.8.131.52)
I tried to burn 698 Mb video on a 700Mb blank and it gave me an error that "there is not enough space for this compilation"!
I checked the free space by using the "i" button and it showed that the CD had 703 Mbytes available. No matter what I tried I couldn't burn the CD. I tried some more blanks but it was all the same.
So I uninstalled Nero 6, and then discovered that you cannot get version 184.108.40.206 anymore. Instead there was an update: 220.127.116.11.
I downloaded and installed that, and guess what - the SAME error message.
So I looked a bit on the Internet and found 18.104.22.168 version again. Installed that and it worked immediately on the same very CD I tried the first time.
Then I experimented more and tried 22.214.171.124. It also worked normally!
My CD-RW drive is Plextor 48x24x24
I had standard ISO and "No multisession" options enabled.
I also had "Finalize the CD" and "disc-at-once" modes selected at all times, so please do not suggest me to check the parameters. I did it 1000 times (unless there are some hidden/not obvious settings somewhere else). The point is with the same parameters, versions 126.96.36.199 and 188.8.131.52 work, whereas 184.108.40.206 and 220.127.116.11 dont....