I think 060 is OK for AfA_OS. Don't worry to install the software, if something goes wrong just disable it in startup-sequence. So far, my OS3.9 system is stable with latest AfA_OS installed. However you might to disable picture_datatype.exe and ilbm_datatype.exe (by removing them from "AfA_OS_Libs" directory. Even though these files provide transparency for images, this feature is not 100% compatible with other programs.