Hi ,
Did you happen to change the name of the macro from the original name? There seems to be a potential bug with macros that is preventing the macro from being accessed if it is not the original name given to the macro library. For instance, if it was created and called “NewMacro_0” but immediately renamed to “TestMacro”. The macro would not be called unless you used “NewMacro_0”. I have entered a bug report for this as UE-7948. Can you check to see if this helps with your crash?