Unreal Engine 4.20 Released!

[Zeblote]

@ronm6667

Why is there not a ‘flag’ button in this section of the forums?

It seems to be missing in several sections. Strange.

[anonymous_user_649b7b33]

Yup, I modified the file manually by copy-pasting the changes from the fix commit and it worked.

Here’s my output log for project generation:

Running $(EngineRoot)/Windows/Engine/Binaries/DotNET/UnrealBuildTool.exe  -projectfiles -project="$(ProjectRoot)/$(ProjectName).uproject" -game -rocket -progress
Discovering modules, targets and source code for project...
$(EngineRoot)\Windows\Engine\Source\ThirdParty\Expat\Expat.Build.cs: warning: Referenced directory '$(EngineRoot)\Windows\Engine\Source\ThirdParty\Expat\expat-2.2.0\Win64\VS2015\Release' does not exist.
WARNING: Precompiled module 'UE4Game' will not be usable without non-precompiled module 'FunctionalTesting'.
WARNING: Precompiled module 'UnrealEd' will not be usable without non-precompiled module 'FunctionalTesting'.
WARNING: Precompiled module 'FunctionalTestingEditor' will not be usable without non-precompiled module 'FunctionalTesting'.
WARNING: Precompiled module 'UnrealEd' will not be usable without non-precompiled module 'FunctionalTesting'.

Any thoughts?

[TG_Daniel]

@John_Alcatraz

Oh, I have the exact same problem with 4.19! I already thought its something wrong only for me, great to hear you have the same problem.

Does anyone know more about this?

I think I’ve finally figure out what is causing this issue.

If you have this line ***r.compileshadersfordevelopment=0 *** in your DefaultEngine.ini you have to remove it or comment it.

This seems only to affect UE Source versions, not the Vanilla (the one from Epic Launcher).

[DaYuShen]

@Wrekk

No mention of RichText?
You changed how it works, so now the community plugin doesn’t work and will probably be a giant hassle to get to work again.

It would be fine if the one you made actually worked, but it doesn’t.

Hi,do you know how to show text on 4.20 richtextblock?

[diamond3]

Switching viewmodes with keyboard shortcuts like Alt+1, Alt+2, Alt+3 etc not working in UE4.20.1.
Can anybody confirm the same?

[RVillani (Rod Villani)]

@diamond3

Switching viewmodes with keyboard shortcuts like Alt+1, Alt+2, Alt+3 etc not working in UE4.20.1.
Can anybody confirm the same?

Those work for me. So either not an engine bug or a rare one that depends on other specific conditions.

[TomSarkanen]

@muchcharles

HLOD gets stuck in an infinite loop with complicated projects. I’ve tracked it down to here:

const AActor* UHLODProxy::FindFirstActor(const ALODActor* LODActor)
{
auto RecursiveFindFirstActor = &](const ALODActor* InLODActor)
{
const AActor* FirstActor = InLODActor->SubActors.IsValidIndex(0) ? InLODActor->SubActors[0] : nullptr;
while (FirstActor != nullptr && FirstActor->IsA<ALODActor>())
{
const ALODActor* SubLODActor = Cast<ALODActor>(FirstActor);
if (SubLODActor)
{
SubLODActor->SubActors.IsValidIndex(0) ? SubLODActor->SubActors[0] : nullptr;
}
else
{
// Unable to find a valid actor
FirstActor = nullptr;
}
}
return FirstActor;
};

The body of if (SubLODActor) doesn’t actually do anything, guaranteeing an infinite loop if the FirstActor is an ALodActor.

It looks like in the body of that if statement it should be looping through all sub ALODActors and a recursive call on each until it gets a non-ALODActor or nullptr.

Thanks for the report. This is tracked as UE-62838.

[Shmoopy1701]

Anyone notice if you:

• right click an actor
• select Attach To >> another Actor >> select Socket

In 4.20 it no longer snaps the attached actor to the socket location?

[muchcharles]

@Tom_Sarkanen

Thanks for the report. This is tracked as UE-62838.

edit: opps, this was wrong, it does look mostly ok. I added another comment on github where it could fail, but I’m not sure it is a case that can ever happen.

was:

I looked through the fix, and it seems wrong. Before calling RecursiveFindFirstActor a comment says “// Retrieve first ‘valid’ AActor (non ALODActor)”, but with the fix if it ever calls RecursiveFindFirstActor, it will only return ALODActors.

[anonymous_user_8b97aa8c]

I’m missing something about the glTF 2.0 importer though.
Today, a peerson ask me a question." Does the xbox 360 play blu ray？”the xbox 360 play blu ray

[Calibanul]

is just me or the material editor takes a lifetime to compile

[silvermehran]

Well, skeletal alembic import is having a lot of problems in this release. Importing time is ridiculously high. some objects not importing etc…

[RVillani (Rod Villani)]

@Calibanul

is just me or the material editor takes a lifetime to compile

Yes. But only if you use XGE with IncrediBuild, it seems, which is default now. It’s using a single ShaderCompileWorker, instead of 1 per thread.
My compilations got a lot faster by disabling it on [engine install folder]/Engine/Config/ConsoleVariables.ini

r.XGEShaderCompile = 0

[anonymous_user_d0141e99]

i just love the knowledge flowing here, so happy to be here, learning every day

[GunUltimateID]

Hi, newbie here. I 'm learning from tutorial in the documentation. But,Animation starter pack is not compatible with 4.20. I don’t want to install old version. Please fix.

[CoolOppo]

@Sveitar

Any news about Unreal Engine Issues and Bug Tracker (UE-62042) ? This issue is a pain to work with, please release a hotfix

Epic, PLEASE, I am BEGGING you to just release a hotfix for this already! This is such a huge hassle. I have literally spent hours trying to figure out a way to work around this until the hotfix is released…I have compiled multiple versions of the master branch from source, but they were too unstable, and I spent like a half hour earlier today using regex and batch to try and generate a list of include directories that needed to be added. Please, please PLEASEEEEEE just release a hotfix for this!!! I have wasted so much time already trying to get this to work properly on my own and it’s costing me a lot of time here. I truly think fixing this issue alone is enough to justify the hotfix, but I can see you guys already have fixed a lot of other bugs too, so why not deploy it already? This is a critical bug that is really awful to have to put up with guys, and I’m really disappointed that you haven’t put the fix out there yet despite it being such a big problem. For the love of God, please just find it in your hearts to put out this update already. We’re all waiting. Thank you.

[CoolOppo]

@GunUltimateID

Hi, newbie here. I 'm learning from tutorial in the documentation. But,Animation starter pack is not compatible with 4.20. I don’t want to install old version. Please fix.

When you click Add to Project, just check the box that says “Show all projects” and everything will work fine!

[ExtraLifeMatt]

@CoolOppo

//…

This was already fixed in 4.20.1

[Sveitar]

@ExtraLifeMatt

This was already fixed in 4.20.1

Nope, this is fixed in 4.20.2 and yet to be released.

[kurylo3d]

when will we have rtx capability for light map baking? I preordered my RTX2080TI … should have it next month