I have an update. I was lucky that I did in fact find 10.26 and its skins. I uninstalled 10.27 and installed 10.26.
As I thought, 10.26 has no problem when trying to add a TsTrackbar to a project while 10.27 has an Access Violation when trying to add a TsTrackbar to a project.
One interesting thing I observed. When changing skins in 10.27 there was a lag in changing the skin (in other words it was not a smooth instant change). 10.26 is very smooth and very fast. In fact I consider 10.26 as a standard of excellence that I will use to compare future updates.
I await 10.28 and the fix for this problem.