Crash while save an actor

I update my project from UE4.21.2 to UE4.23.1 build from source, there is an issue I meet for a few days, I have an actor(BeaconManager1 in 2nd pic), when I save it ,it crashed even without change anything , I redo this actor and replace it everywhere in the blueprint, but when I delete it, there is an pop up box like the second pic, and the new BeaconManager is not work. I also use UE4.22 from epic launcher, it works well.

I really don’t know why, can anyone give me some suggestion or is anyone meet this kind of issue?
I really appreciate if anyone can give any hint about this, thanks

Is anyone meet this kind of issue?

I just re-do the BeaconManager again, when I check the Reference Viewer, the older BeaconManager Reference view is like the first pic, and new one like 2nd pic,and when I try to delete older BeaconManager, there is 30 Memory Reference, and I don’t why?

So its a bug in UE4 4.23 version?
Cause i oepn the project with UE4 4.24 engine from source, and it works, and no crash when I saving BeaconManager, I still don’t really know why, but it works, so im thinking it a bugs inside UE4 4.23.

Hope can help you guys, or if anyone know the real reason, I will be appreciate if you can tell me.
Thanks

If you are using source engine can you post a callstack for a crash? Also did you try to use Fix Redirectors?

Thanks for your reply, post a callstack for a crash? What that meaning? i don’t get it,can you give me more detail? Thanks