Sorry, I'm still relatively knew, just offering what worked for me.
From reading some old forum posts, add the comment back to the TitleFormat.
Check to make sure you're "Nullsoft SHOUTcast Source DSP v1.8.2b" in your options > DSP/Effect.
then, I'd use Output 2, and add all the settings again, and make sure that "Enable Title Updates" is checked, and "Auto" is checked for both, then connect to your DNAS. Basically, you start from scratch and try again.
I read a post that if you use a plugin to let you multiple DSPs, that it messes stuff up. You didn't mention anything about it, so I doubt this is the case.