@mps_DK actually, this is a bit different from rollback, this just activate Spine.app feature that is load previous version instead of latest version. the difference is that "a rollback is delete current version and store previous verison", and this methods is just "set Spine.app to load previous version".
so, if you reinstall Spine, launching a new installed Spine would update 1.7.08 again. (and then crashes again.)

@Shiu Yeah, trouble could be happen, it's alright. thanks for your efforts!

@FinalBossLeo Thanks.