sm_osx v1.2.4

#9 was merged, this fixed #3 and #7
#4 was fixed
#5 was kinda fixed. Since its coop, the External Data flag was needed when I added it, but nowadays, its really not needed, so it has now been removed
#6 is still not fixed, however, in the meantime, I have put it in the development repos. You can view development repos by going to the app settings, then Developer.
Other bug fixes and improvements

Full Changelog: v1.2.3...v1.2.4