Hm, that make things even more mysterious, and not in a good way 
DT_PlayerEventsSounds_DevTest struct has two variables, first one is SoundWave, other one is string. I am testing sounds for player events (lost shields, low heatlth, etc…), super simple stuff, no clue why this is having issues. I just renamed the struct, this usually helps with problematic ones, and going to do test compile again. Fingers crossed and all that.
Regardless of the outcome, thank you for the effort!!