No problem, assume you have it sorted now.
I do not know if you saw it, but when I was looking to introduce looping capabilities into my rig, I looked at Ableton, but TBH I did not like it much and the learning curve looked pretty huge. I wanted a solution integrated into Cantabile, so I went the way of using a looping plugin called MuLabs, and I wrote a guide on how to use it
Not suggesting in any way that your approach linking Ableton and Cantabile is wrong in any way, but just thought I would point out that there is a looper option (probably one of many) that works inside Cantabile.