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ServerTravel, out of date NetDriver ?

Hi, I'm not sure if this is a bug or if I'm doing something wrong but here is my problem:

When I server travel (non-seamless), this log is printed continuously on the client side during the travel:

 LogWorld:Warning: SetActiveLevelCollection attempted to use an out of date NetDriver: GameNetDriver

Here is the full log (I think I call ServerTravel at line 91): https://pastebin.com/vjZncwzR

I am using SubSystemNull.

Does anyone knows what this log means ? I can't find any information about this on google.


EDIT: I just tried traveling with the console command in a new empty c++ project and got the same thing, here is the log : https://pastebin.com/VRxAxqGa

Product Version: UE 4.16
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asked Jul 19 '17 at 10:31 AM in Using UE4

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112 1 5 9

avatar image Visnarel Jul 30 '17 at 01:27 AM

I'm seeing this as well

"LogWorld:Warning: SetActiveLevelCollection attempted to use an out of date NetDriver: GameNetDriver"

avatar image Kelteseth Aug 26 '17 at 01:13 PM

Any update on this? Same problem here

avatar image Kanibel Sep 06 '17 at 04:11 AM

Getting the same thing here

avatar image Kelteseth Sep 06 '17 at 10:43 AM
avatar image Kanibel Sep 07 '17 at 04:56 AM

Yes I did, seems odd. As it used to work fine!

avatar image Burnrate Sep 28 '17 at 10:09 PM

Any progress with this?

avatar image masmil1988 Oct 19 '17 at 11:03 AM

Does someone solved anyway?

avatar image Rasped Oct 19 '17 at 06:53 PM

I'm having the same problem.

 SetActiveLevelCollection attempted to use an out of date NetDriver: GameNetDriver
avatar image Curs0 Nov 09 '17 at 07:36 AM

same here in 4.18, anyone solved it?

avatar image Animaxe Nov 13 '17 at 08:11 PM

I'm also getting this same problem on 4.18.0 on a project that used to work on UE 4.15. Apparently, this error arises because a chunk of code marked with "TODO: START TEMP FIX FOR UE-42508" (World.cpp - line 6419), as far as i could debug it, the netdriver was ok before this, and would be working if the temp fix hadn't been applied. I'm not using steam subsystem, just trying to connect two machines through PIE.

avatar image chiefGui May 04 '18 at 07:58 PM

Still facing this.

avatar image NathanVMP Mar 18 '19 at 12:56 PM

Still experiencing this in 4.21. Couldn't find anything online about how to fix.

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2 answers: sort voted first

One possible solution, if you are using the Steam online subsystem, is to enable seamless travel and setup whatever code/bps you need to make that work. I found out that steam does not support server travel calls without seamless travel enabled and the error is exactly the same. Another thing to be aware of is that seamless travel currently doesn't work in PIE. I'm not 100% sure, but I saw a support request on the oculus dev site that mentions this same error, so it's possible that the same restriction applies to the oculus online subsystem.

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answered Nov 09 '17 at 01:58 PM

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Modeus Games
141 12 8

avatar image Burnrate Nov 09 '17 at 03:38 PM

I believe this is the correct answer. We are still trying to get our stuff working but the basic connections seem to function through steam using seamless.

avatar image Weibye May 14 '19 at 12:54 PM

To add to this:
- Make sure AGameModeBase::bUseSeamlessTravel is set to true
- Make sure a transition map has been set in the project settings.

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4.22 still an issue being ignored...

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answered Apr 14 '19 at 05:00 AM

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avatar image TSpartanT Apr 29 '19 at 11:03 PM

If this doesn't work for you, make sure to do the following:

In your "Open Level" node after hosting the session, make sure you put "listen" in the options.

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