Failed to open descriptor file

I got UE4 4.4.3 version. but after building, when it launch i can’t start unreal editor.
I attached the error message.
My build option is Debug and Win64.
I can’t find any way to figure out the cause of this .

Any help?

Hey cokaru-

Are you referring to getting the source code for 4.4.3 from GitHub or are you building a code based project from the Launcher?

Hi cokaru,

We have not heard back from you in a few days, so we are marking this post as Resolved for tracking purposes. If you are still experiencing the issue you reported, please respond to this message with additional information and we will offer further assistance.

Thank you

I’m having the exact same issue trying to run the editor built from source (GitHub, up to date, release branch) under Win64 Debug configuration.

The problem appears isolated to the Debug config, as it doesn’t happen under Debug Editor or Development Editor.

Hey -

Are you trying to build a project or are you building the editor itself? If you are building the editor then an editor configuration setting has to be used. Debug configuration would mostly be used to debug a game project (typically inside Visual Studio).

I’m trying to build the editor itself. I was under the impression that Debug was what I needed in order to have breakpoints in “built-in” plugins (plugins in the engine’s plugins folder as opposed to a project’s plugins folder) get tripped. With any of the other settings breakpoints in plugins never get hit.

You should be able to use Debug Editor to run the editor in debug mode through Visual Studio.

I can debug the editor but breakpoints in plugins don’t get hit when using Debug Editor. Any hints on how I can actually debug plugins?

When running in Debug Editor, can you check the Modules window to see if the symbols have been loaded for the plugin dll? If the Modules window doesn’t open when you run in debug mode you can find it by going to Debug->Windows->Modules.