I’ve spent 3 hours trying to get my project to update to 5, I am coming from 4.26 and per Epic’s recommendations, I’m going over all those versions instead of one after another. - my workflow was the following
1- backup project
2 - check out every file from perforce (will revert unchanged files later)
3 - edit uproject file and put “false” all plugins that aren’t available in 5.
4 - clean, rebuild solution, then build
5 - once solution builds successfully, start editor -
The editor loads but if I try to open any blueprint asset, it crashes. Even more strange, If I even create a NEW asset and try to open it, the editor crashes. So far googling only finds information relative to Instanced Stereo rendering, which I have disabled. Nanite is also disabled though I wouldn’t think that would be causing my issue. Additionally, I’ve disabled just about every single plugin this project has, and I’ve verified the Editor is installed correctly. I also tested a blank project in 5.2 and it can open a new blueprint just fine. This IS a large project so who knows what is making the editor crash - I thought it was possibly some of the blueprint graph plugins, like BPassist, but I have those disabled. When I migrated a newly made BP from my 5.2 project to a blank 5.2 project, I can open it in that blank project. I’ve also deleted my entire config folder, just in case something there was set wrong.
Additionally, I’ve gone through and deleted every single macro/blueprint function library I could find. I’m not sure but maybe it’s not just possible to upgrade directly from 4.26 to 5.2, maybe you have to hit 5.1 or 5.0.
EDIT - This also happens in 5.1
Can someone please point me in the right direction to debugging this? I’m stalled until I do.
Here is the error message I get -
Assertion failed: NewOperatorInputA [File:D:\build++UE5\Sync\Engine\Source\Editor\BlueprintGraph\Private\K2Node_CommutativeAssociativeBinaryOperator.cpp] [Line: 297]