Hey sharke ,
 
Great to hear that ...I hope it's something simple and easy to fix .
 
Kenny

Hey sharke , I was recording in Mixbus 32C today and I created a mono track but when I recorded there was the same green line showing as on your track. It looks like an automation or volume line. I thought I somehow created a stereo track but I didn't. The line disappeared when I selected the little hand next to the smart tool and never came back. Just wanted to through this out there.

(Mixbus 4) I imported a mono track again and it only came in on one track. I then viewed the automation and it does not look like what James is seeing at all. Something quite different.

I imported another track and did some automation on it but could not create that line. Closing the automation lanes didn't produce a line. I did get the same line in the same place as he did though when I recorded earlier. Can't reproduce it though. This is a tough one.

I opened up Mixbus 4 and created a mono track to do some testing of a guitar sound I'm trying to create and there it was the green line through the track just like what happened when I recorded in Mixbus 32C. I am sure mixbus 32C is not creating a stereo track. If you look at a stereo track with a mono source the wave and the line are evenly spaced in the track where Sharkes wave is center and the line is near the top. I think this is just some quirky thing with mixbus because again the line disppeared when I clicked on the hand icon next to the smart tool icon. So this is happening in both Mixbus 4 and 32C. At least for me it is.

I have just got M32C now so I was able to do this test. And yes I am seeing what you are seeing now James. Firstly it is to do with Range editing. It is NOT the other channel of a supposed stereo track. The mono file comes in as per normal except this green line represents the level of the track. If you swipe a range for example (with the Range tool) then press D e.g. the Draw tool you can lower the volume of the line above over the range you have selected.
 
Studio One has something similar except it is buried in the automation pages where it sort of belongs. If you press the hand tool with the finger that line goes away as well as Bob has also mentioned.
 
Mixbus 4 behaves slightly different to this. The mono file comes in as per normal. (no green line) You can get that green line though by selecting the range tool and then it pops up. And you can get the draw tool and do the same thing e.g. increase or lower the level of the green line e.g. volume over the range.
 
Just out of interest I have found M32C is a little more unstable compared to Mixbus 4 as well. But I bet M32C V4 will be great though when it comes out.
 
Sorry James if this is old news and you have already sorted it. I only just got M32C the other day. It is interesting how M32C and Mixbus 4 behave slightly differently with this though. This volume/range automation line just comes up automatically on M32C but on Mixbus you have to make it happen e.g. it defaults to no volume/range automation being displayed. And this automation too would be in conjunction with the track automation. I guess that they are allowing you to fine tune ranges within a track. Which is sort of cool too.

Once again I totally forgot to check back in about this issue! Yes you are no doubt right Jeff. I guess I should really read the 32C manual from scratch instead of presuming that I'd just be able to dive right in after having used Mixbus. 
 
I haven't noticed any stability issues yet but then again I haven't really gotten going with a full blown project in it yet. 

Actually the manual does not talk much about this. I just discovered this and fiddled around. The instability seems to be around first starting up compared to Mixbus 4. Once 32C boots up for me everything seems fine.
 
I had more issues trying to open Mixbus projects in 32C as well which I think they don't recommend. You are better off starting fresh projects in 32C I think.