After upgrade i come across a problem i couldn’t resolve myself.
I have BP_ChessBoard which inherites ChessBoard(c++ class) and i placed an instance to my current map.
Now that instance gives me this error:
This map is using externally referenced packages which won’t be found when in a game and all references will be broken. Perform a map check for more details.
I was just coming to post this same question, though I don’t inherit anything from C++. I am using just the map that came with the Top Down template but I deleted all static meshes and created a landscape and still get the error:
This map is using externally
referenced packages which won’t be
found when in a game and all
references will be broken. Perform a
map check for more details.
Idk if this will help but, I made a blank 4.9 project and just copied my content folder over and all of the reference errors went away. (All though I had way more than just 1 error and a lot of them were engine based, still worth a try though!)
I cleaned up that blueprint. Reattached meshes and recreated nodes and functions from scratch. It fixed the problem for me. No need for recreating the entire project.