Sorry for your challenges, Losty. I'm having great success with version 12!
Of course, Mac Retina displays are known for causing problems like the ones you're experiencing. I'd hoped Mac would have fixed this by now.
You can certainly use your own text, graphic or even a picture-in-picture with Motion Tracking. I demonstrate how in tutorial on the left side of this page. http://Muvipix.com/pe12.php
As for 2b, I have no idea why you're shooting your videos upside-down, but you certainly are adding an unnecessary level of complexity to your post production. I'd recommend that you first right-side-up your videos in Premiere Elements and then output the finished video using Publish & Share/Computer/AVCHD with the M2T 1920x1080 preset to output the fixed video. You can then use your righted videos in a new project and do all the Motion Tracking you want with it.
Thanks for you quick reply.
However I don't think scroll-direction is a Retina problem. I had to use the fix for V 11 - which worked fine then, but afaik it's ony regarding V11 - not V12... at least V12 does'nt start up with the HandlerTimeline.framework replaced...
As for 2a) I know that I can replace that graphic with text or something other later on, but quite an indirect workaround - resulting also in difficulties around the actual placement of the text in the final video since the text gets scaled and repositioned due to the motion tracking. Is there another possibility?
As for 2b) up-side-down is due to the mounting of the camera - less shaky. I know that I can convert them and reimport, but I rather would like to skip this step since I have really a lot of those videos and use only very small parts of it in the final video...
2a) Yes. Did you look at my tutorial? It shows you how.
2b) I don't what to tell you. If you want it to work, you'll have to do it as a two-step process.