Please attach a 5 second sample of the video you've produced that isn't recognised - editors can try it out on their systems. mp4, mts, what is the file?
So.... you can also try Full side by side - see if that helps.
You have two video which are 2D, they are not 3D until they're merged in a side by side set up. The video will have to be processed in whatever product you look at and these two video streams will have to be made to be 3D. You have to create the 3D stream (merge the 2x2D video) before PD10 will accept it as a 3D video. You have to do that manually in PD10.
Half width, it's a squashed view of your footage and you're right you cant add much to it if you're attempting to create 3D from the two 2D streams. You need to create the 3D and then carry out your additional changes other than splitting. The split/cut is the most used non-transition in professional editing and should be used.
3D cameras capture a single video from two lens locations/centre points. Your camera set up isn't 3D. It is a 2D camera x 2, aligned to mimic the eyes and it requires a software merge to add the 3D depth.
There is software that can merge 2D x2 into a 3D set up by pulling the left and right cameras into the two areas of the screen or creating an anaglyph. PowerDirector cant do that automatically, you can do the task manually. I'm not aware that CyberLink have claimed to take 2x2D video streams and auto create 3D.
3D like titles: You're now referring to the 2D Titler which will create 3D like titles or the 3D Titler which creates 3D titles for 3D video - This now needs a new post/topic.
It would be really great if you could provide two 5 second 2x2D GoPro clips for editors to try out (and assist you). It is a challenge many would relish, making a 3D video from the footage.
Dafydd