Editor freezing when loading certain scenes

[Veritas]

I’m using Unity 5.5.2f1. Upon loading a few scenes in my project (that aren’t anything special), the editor just hangs.

The very end of the logs have this:

[00:00:42] Enlighten: Reflection Probes started.
[00:00:42] Enlighten: Finished 1 Ambient Probes job (0.00s execute, 0.00s integrate, 0.05s wallclock)
[00:00:42] Enlighten: Finished 1 Reflection Probes job (0.00s execute, 0.00s integrate, 0.05s wallclock)
Opening scene ‘Assets/Scenes/Shooter.unity’
Load scene ‘Assets/Scenes/Shooter.unity’ time: 0.007464 ms
Unloading 16 Unused Serialized files (Serialized files now loaded: 0)
[00:00:00] Enlighten: Reflection Probes took 16.653086 seconds. Cancelled, so not done yet.
System memory in use before: 191.4 MB.
System memory in use after: 156.6 MB.

Unloading 334 unused Assets to reduce memory usage. Loaded Objects now: 4068.
Total: 9.876873 ms (FindLiveObjects: 0.288300 ms CreateObjectMapping: 0.057224 ms MarkObjects: 7.302380 ms DeleteObjects: 2.228034 ms)

I’m able to load at least one scene in my project. Is there anything I can do to figure out what’s causing the scenes to freeze? Recreating these would take ages. These were working fine as recently as Saturday-ish. I can’t think of anything I’ve added that would break things horribly.

[Veritas]

Edit: Got it to finally work by checking out a much older build, then checking out the newest build. Something needed to be regenerated!