How would you put text on a path so it can be curved? I thought I had seen this somewhere but can't seem to find it now. I sure I'm over-looking something.
I use Crashcore scripts to do it, the drawback is that you'll get an animated text at start, for this text (picture) I used 6 points to draw the curve and it will be translated into 6 keyframes in timeline.
I havn't used it a lot but when I saw your question I remembered how it was done, maybe you'll explore this script and find a better solution than this.
I modified your moho file, I used "split curve" script to make a lot more keyframes...I added and added until it was at least a little better, so then you just copy the last keyframes (where the text looks ok) and paste them at frame 0 then it should work ( I noticed that the text was not placed exactly following the curve, it ended up a bit more to the right.
Anyway here's the mod moho file: http://www.musikboden.se/animestudio/textcurve-mod.moho