Rampant Crashing in 4.19

I’m crashing constantly in UE 4.19 which wasn’t happening before, either I’m doing something new and catastrophic or the new version of the engine has a new bug.

It happens almost every time I compile, the error message says I don’t have debugging symbols so I can’t view the Call Stack.

I’ve “Reported and Restarted” 15+ times over the course of the night.

The Log doesn’t appear to show much.

I open UE4 → File “Open Visual Studio” → Edit my code → Compile and it crashes.

My C++ code currently consists of a handful of small utility functions, a slightly extended version of Hierarchical Instanced Static Meshes and a portion of an actor which I’ve been trying to write but unable to make much progress on due to the crashing.

Doesn’t seem to matter whether I build in VS or the Engine, the crash happens just the same.

Update 1: The crashes continue to be rampant, I’ve deleted the Intermediate, Build, and Saved folders repeatedly as well and I cannot avoid a crash.

Update 2:
I believe that this happens mostly when my code builds successfully but has a bug.

For example, I used the wrong float type FFloat32 instead of float and after I built it the Editor crashed immediately, after that I couldn’t start the editor no matter what as it would just crash on start.

Deleting all remnants of the current build and commenting out the code was the only way to get the editor to start.

Having to restart the Editor every time you make a mistake is a huge time sink especially when you don’t know that your error is what is making it happen.

The Editor also spontaneously crashes in other circumstances for which I have no idea what the cause is.


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I’ve found that when this happens, there is some sort of error in my code, specifically that I failed to instantiate an object, then tried to use it. Check all of your objects to ensure that they are being constructed properly, and you might just find the culprit.

I am also experiencing this though Visual Studio successfully compiles. Every time I try to load the project in the editor, it opens 74% of the way then throws a crash. Any help would be appreciated.

This is still rampant in 4.20 The easiest way to know if you’re about to have a successful compile is that the editor crashes.