Problems burning some image-files

[Prometheus]

I have a big problem burning some of my downloaded image-files. if the files are cue/bin or large enough other files, there's no problem at all. but smaller cdi-, nrg and img-files doesn't run on my dc, even if i use a dummy creator.
i use the newest version of NERO.
please can someone tell me how to burn these types of files?
thank you a lot
peter

[Megalexxx]

Burn CDI files with DiscJuggler.