First up, edit out your serial number before someone pirates it. Here you have a "buggy" version installed over another known "buggy" version of Nero 7. Uninstall, run this clean tool, http://ww2.nero.com/nero7/enu/Nero7_CleanTool.html and then install latest version 7.5.9.0 from here http://www.filehippo.com/download_nero_7_premium/ You have a lot of memory in use, dont multitask while burning, turn off all unnecessary programs Burning too fast, slow to 4X
