No, I didn't change anything yet. From comparison of a couple of files I decided all changes from 3.17 were well marked, so after that I just merged the JCulture and Auto_Play blocks from the provided sources into the sources for a compiling but unmodded 3.19 dll and compiled that. I stuck the resulting final release dll into the jculture mod to replace the 3.17 dll and stuck that in my mods directory, started BtS 3.19, selected Advanced, load mod, JCulture, the mod started, I selected Play Now, chose a standard fractal, otherwise random, normal speed, monarch difficulty, CTD.