cubase sx. sl 2.2.0 Exporting Error!

Hi, I have this problem when I export an Audio Mixdown file on Cubase Sl. 2.2.1. I click File export to: Audio Mixdown. When that is clicked it comes up with the Name, File type etc. Then I click save and it says: The 2 output channels will be mixed down to a mono channel! so I click ‘‘Continue’’ and then it says: An Error occurred during the export! I have attached a picture of the error. does anyone have the same problem, Or does anyone know how to stop the error :neutral_face:
Error in Cubase Sl. 2.2.1.PNG

will anyone help???