Because Virtual CD doesn't by default extract the RAW data required by Nero to burn .iso files, this CD writing tool can have difficulty reconstructing extracted disk images. Luckily WinOnCD is capable of doing just that without making reference to RAW data, so I'd suggest you use this instead. In some cases it is possible to convert disk images created with Virtual CD using ISO Buster or WinISO and then write them to a CD in the usual fashion.