Anoth3rhobo

I completed the burn stage, which I burned a .dvd file to a disk (it was about 7.5gb file onto an 8.5gb DVD+R TDK double layer disk if that makes any difference) then while it was running the verification part at about 4% I got an error message - a screenshot of which is attached - which I don't for the life of me understand. After I tried the disk and although it was recognised, it wasn't able to run. Could anyone please explain the problem i'm facing and how to sort it. Thanks very much!