hi
The current problem continues even after I exit the editor and fire again - restarts. I tried to put “is valid” after GetAllActorsOfClass[FONT=Helvetica,Arial,Verdana,sans-serif] node - didn’t help.
I also tried with a new project I created and there (without any change of mine) log gives the same warnings
if you want to see it happening just create a new project and every time you compile the bp_gridactor blueprint you will get lot of warning (same as I worte before).
I do not know the reason for this, but it is even worse when trying to modify some blueprints.
Sorry for the headache 
cheers
leo