Certain Guitar Tracks are set up to send to 6 MIDI channels, one for each string. This may be what you have going on there.

The reason for a separate MIDI channel per string has everything to do with TAB, Guitar Neck view, etc. in which the part can then show you exactly what the original player played, at which position, and on which string.

Try going into Notation View, then hit the the Track radio button for the one the Guit is on, then hit Opts. button, check the dropdown at top LH, if the Track Type is set to anything other than "Single Channel (Normal)" then that's why you only get the one string when you Render.

If the slot is grayed out, then that function is just not available for that particular chosen track or style, another way to get it would be to Export as Standard MIDI File and open in RB or another MIDI-capable DAW program and you should see six separate guitar tracks there. Combine into one, or Render all six to one audio track.


--Mac