That get Actor of Class node was left over from trying to get it to work another way. First I was trying to access the location of the player start and then target point directly in the game mode. Thinking that wasn’t communicating, I made a transform variable stored in the game instance and the level blueprint sends the position to that variable. That resulted in showing up at the player start, but without a car.
I tried adding print statements for casting failures like you suggested and didn’t get any. Nor did I get one for trying to print out the location.
However I did manage to spot this in the log “PIE: Error: Blueprint Runtime Error: “Accessed None trying to read property CallFunc_GetActorOfClass_ReturnValue”. Node: Set SpawnLocation Graph: EventGraph Function: Execute Ubergraph Washington Square Export Blueprint: Washington_Square_export”
And that graph in the level BP is
