While it worked for all animations a week ago, I redownloaded the skeleton viewer this week, and it doesn't work anymore. A window flashes fast enough that I can't read anything, and then disappears - no conversion. I checked a hundred times if my line is correct, but just in case, here's how it's structured:
java -cp "D:\spine_downgrade\turret\skeletonViewer.jar" com.esotericsoftware.spine.JsonRollback "D:\spine_downgrade\turret\turret.json" "3.7" "D:\spine_downgrade\turret\turret_3_7.json"On top of that I opened the SkeletonViewer.jar with WinRar, went to com->esotericsoftware->spine and there was no JsonRollback in there. I tried to copy its code from GitHub, turned it into a java file and added the file in there and it didn't work. Neither did it work as a .class file.