Hi, as far as I know the latest Cloanto kickstart rom are v45.61 not 40.55. Perhaps your v40.55 is an old build.
Anyway, even in this case (v45.61), Cloanto has provided little information about them. There is not a changelog and a mention of the responsible developer that did the rom build, so unluckily you are on your own on this. I suggest going back to CBM v40.68 which has been stable and thoroughly tested and we actually know what is inside and how to fix its shortcomings.