i have like 6 runtimes in my system for the various areas i got things from and things that aren't daz4.0 and 4.5 specific my runtime for 4.0 and 4.5 are pretty much the same runtime in the my library section although 4.5 did add a second my library area.

 

most of my ds4.0 and 4.5 stuff is in my first my library section easier to find in my opinion

 

although all of my runtimes are in the content/runtime format except the my library ones then it's my library/runtime wo 4 regular runtimes and 2 mylibrary runtimes in case that was confusing