What does this mean?

When I try to do an audio export as a Windows Media Audio File, in the General codec settings, I see it says in red letters, in the input stream box, “Invalid Channel C”. In the encoding scheme box in red letters it says, “No Formats Available.”
I’ve been having trouble exporting this particular song and no, I haven’t tried to export any others either. I have successfully exported it first as a WAV file and I later could also as an MP3 file. The thing is, I need to have it as a Windows Media Audio File to play the song on some of my devices in order to check my mix.
I’m running Cubase Artist 7.5 and this is the first time I’ve ever seen this.
Can anybody tell me how to fix this problem?

Thanks in advance!


Sorry for that. My mistake. I solved it after re-looking at it. ooops!

Jeremykeys the now embarrassed.