. Tryed to disable and reenable all plugins as AI suggested
. Tryed to OFF/ON the Auto Activate
. Now when I open the viewer the engine crash!
. Verified the 5.7.4 instalation
. Created a new project using the FPS template, the original VFX are working, but when I try to create a new one from the default examples, without change anything, I have the red box again.
Nothing works! Lost several hours with this already.
Seems the basic 2D FX are working now, but nothing works with fluid (yes, I enabled again and restarted unreal), still red boxes.
I really don’t know what to do! Anyone could help me with this issue?
Is something related to my VGA? NVidia RTX 2070 TI
That’s quite a strange issue you are encountering, it’s like the niagara system is present, yet fails to render properly, either in the scene, or the viewport.
One clarification though, the red box is completely normal, that’s the bound from the gas emitter. You can toggle it off and on from the summary controls:
Now, for the issue itself, I don’t think there’s anything wrong with the emitter itself, as you simply dragged it from the emitter collection and it’s not working at all. I think either the engine or your system are the source of the problem.
There are three project settings that need to be confirmed engine-wise for Niagara to work properly:
Platform > Windows, ensure that DX12 is supporting the SM6 shader format
If all those are in order, Niagara should work as intended from Unreal’s end. So, if the issue remains active, then the next step is to tackle your GPU. A 2070 TI should have no problems dealing with basic Niagara effects, but the drivers need to be up to date. I would suggest clearing up your current install with DDU, then install nVidia’s Studio drivers, as those are the most stable for engine work.
And if the issue is still not solved after that, then please look for the crash logs located at either “Saved/Crashes” in your project folder, or in your local machine, at “C:\Users[Your Windows Username]\AppData\Local[Project Name]\Saved\Crashes”. Once you find them, share the contents in this thread, and we will continue investigating. Good luck!
Assertion failed: InputType.IsValid() [File:D:\build++UE5\Sync\Engine\Plugins\FX\Niagara\Source\NiagaraEditor\Private\ViewModels\Stack\NiagaraStackGraphUtilities.cpp] [Line: 2785]
Type is invalid.
