Unable to launch session with in uefn to playtest & load errors

[Tusiime]

Summary

hello, im hoping someone will help me out with this
i have been suffering and ver frustrated with uefn for the past few days for all the crashes and errors ive been getting
when i launch uefn i get load errors immediately that claim some files do not exist on disk or in iostore (they are uncooked files) & perhaps it has been deleted or was not synced
And then when i try to launch a session within uefn, either fornite crashes / uefn crashes / both fortnite & uefn crash
this has happened multiple times so and i have tried everything i could think of to fix this but all in vain
i have also tried to uninstall & reinstall both uefn & fortnite but nothing has worked
so can i please have some help with this because i am really frustrated

Please select what you are reporting on:

Unreal Editor for Fortnite

What Type of Bug are you experiencing?

Live Edit

Steps to Reproduce

launch uefn
launch session

Expected Result

successfully launching a uefn session with no errors

Observed Result

While tring to load package / JunoGame/Effects/CharacterFX/MinifigNS_Juno_Player_InWater_Splash_Deep, a dependent package /Game/Effects/Niagara/Modules/Water/InitializeWaterSnapToOwner was not available. Additional explanatory information as follows:
FPackageName: Skipped package /Game/Effects/Niagara/Modules/Water/InitializeWaterSnapToOwner has a valid, mounted, mount point but does not exist either on disk or in iostore. The uncooked file would be expected on disk at ‘D: /EPIC Games/Fortnite/FortniteGame/Content/Effects/Niagara/Modules/Water/InitializeWaterSnapToOwner .uasset’ . Perhaps it has been deleted or was not synced?

Platform(s)

uefn & fortnite

Upload an image

Additional Notes

very frustrating
please help

[Hardcawcanary]

Hey Tusiime,

Ignore all those load warnings and other errors, they are normal at the moment,
and if the project fails to load then a whole bunch of other errors show up as a result, these can usually be ignored also.
Maybe one of them isn’t normal, like a UASSET file from your project folder… so unless something jumps out of the logs, we gotta look elsewhere.

What type of Project are you making ?
What type of things are you using in your project ? custom, sequences ?
Are you using world streaming, when did you last build your HLODs ?

[Zelytow]

Hey!

I saw you’ve been active here and just wanted to let you know I replied to your message (when we talked about teleporters and everything in private). I’d like to know your thought when you’ll be able to reply

Have a great day!

[Tusiime]

Im not making a specific project
It doesnt matter what map im trying to launch a session for…even if its a new island template, im still not able to launch a session for it in fortnite
Either uefn or fortnite will crash or both will crash so that is really frustrating for me at the moment
Cause i usually live edit as i work on my projects…i think everyone does that and its really handy so itd be nice if i could find a fix to stop the crashes

And as for the load errors, are they really that normal at the moment? So its not a problem on my end then? Its an issue with uefn or fornite cause i failed to find a fix for them too?

[Tusiime]

This is what happens when uefn crashes sometimes
Other times it fortnite

[Hardcawcanary]

Yeah, normal as in I’m fairly sure everyones getting them at the moment.

OK that error is mentioning the paging file, if it’s talking about the Windows paging file, you can make it bigger and see if that helps, unless your hard drive is getting full.

I’m not sure about Windows 11, but in Windows 10 you type Advanced System Settings in the task bar, and under Performance, click Settings, in the Advanced tab you’ll find Virtual Memory, thats where you can change the size of the paging file, its space on the hard drive used as memory.
If you have a few hard drives you can even set them all up to have a paging file.
Its probably better system performance to have the paging files on drives Windows isn’t installed on

Mine at the moment is using 16976mb…hmmm…on my windows installation drive…I’ll have to change that and see if it improves launching time…

[Tusiime]

okay
let me try increasing the size and see what happens next
thanks for helping me out
ill text back on what happens

[Tusiime]

Heyyy
I just increased the paging file and it worked, just launched a sensation within uefn…i can not believe i have been stuck on this for days!!!
The fix was so simple
Anyway…thank you so much!!!
You really helped me out here

[Hardcawcanary]

How cool, glad to help

And, now we know our projects are using the paging file as well.

[Flak]

Thank you, @Hardcawcanary!

[Tusiime]

yes
thanks again!

[mobifruit]

Thanks for mentioning the “page file”. I’ll experiment with that setting shortly…

In my primary dev system I’m using a static 32 GB pagefile.sys on Windows System drive (SSD). Isn’t that large enough on a 32 GB RAM system? What settings do others than @Hardcawcanary use? Please share

[Hardcawcanary]

I hit this issue not long after this post and was fortunate enough to get a SSD from my bro’s fried computer.

I have about 211GB set for the paging file now, UEFN loads up faster, HLODs build in a fraction of the time and it performs noticably better on my dinosaur fossil system.