Hi Chris,
> testcomplete process starts and the the tested app process starts but I don't see the GUIs for either process
This is how OS behaves when some process (in your case this is TestComplete and/or your tested application) is started from another process that is not running in the current user's session.
The generic solution is to either start the starting process (Jenkins agent) as a regular application from the user session or make it possible for the agent process to communicate with this user's session.
Sorry, I don't have links ready at the hand as we speak, but if you search TestComplete forum you should find a lot of relevant threads.
P.S. I was also extremely unpleasantly surprised when I saw a notification on the site about ABS been discontinued. According to my experience, I did not see anything as convenient as it is... But on the other hand, any reason to move to some other tool while ABS works for you? I know that ABS still works for all guys that I know of without any problem.
