Cubase 6 exports an empty mp3 files

Title says it all.

Exporting wave file works fine, but when I´m exporting mp3 I get a blank file.

Oh and erasing this blank mp3 from the Pool, it won´t actually delete it in the folder, so I have to go “manually” delete it from there.

Sorry, no such problems here with me! Sounds like a codec problem to me though…
What version you are using?