Assertion failed after migration 4.76 -> 4.11.2 source

Development Programming & Scripting
1

Dear Answerhub,

I have a project in 4.7.6 that I I would like to migrate the content to a 4.11.2 project (both are source builds).

I have an earlier version build of the project (4.5 odd I believe) which is not plugin dependent that I have successfully ported to 4.11.2 (I’ve upgraded all the plugins and have confirmed they work in 4.11). This is the project I would like to port the 4.7.6 content files to.

I managed to migrate the files from the 4.7.6 version to the 4.11 version fine but when I play the project I get the following error + screenshot attached too. Does anyone know how to solve this? Thanks:

Assertion failed: NewOperatorInputA [File:C:\UnrealEngine-4.11\UnrealEngine-4.11\Engine\Source\Editor\BlueprintGraph\Private\K2Node_CommutativeAssociativeBinaryOperator.cpp] [Line: 278]
2

Hi ,

Have you tried Launching UE4.11.2 then opening a copy of the UE4.7.6 version? If so, what happens? Also, have you tried migrating assets in small groups and testing by opening UE4.11 after each small migration? Please try these steps and also, post your dxdiag and machine ID so that we can cross-reference.

Thanks,

.

3

Hi ,

Since we have not heard back from you in a few days, we are closing this post for tracking purposes. However, if you are still experiencing problems migrating from UE4.7.6 to UE 4.11.2, please respond with the requested information and we will continue to investigate.

Thanks,