Unable to create Windows x86 build. Error: "Unknown Binary Format"

Last night, I was able to create an x86 Windows build of my game. This morning, I’m not. I can create other types of builds (x64, Mac, Linux) just fine. But, creating an x86 Windows build of my game yields the following errors:


I’ve tried reinstalling Unity, reverting my project to the way it was last night, and deleting my Library directory, to no avail. The issue is occurring with a blank project as well – though in that case, I don’t receive error messages, just get a 0 kb exe file as my output.

Any ideas on what I might try to fix this error?

I was able to fix this by updating my version of Unity to a slightly more recent one. No idea what could have caused this to happen.