BP actor doesn't load. Bug maybe?

So I’m following this tutorial to make an infinite runner game. And I follow the videos exactly but unreal either crashed when I got further along or wouldn’t load up a BP actor that is suppose to spawn when hit play. The videos show it running 4.7 and I use 4.8. I even saved the project when everything loaded fine in case of crashing. And once it crashed nothing loaded when project was reopened. This is the link to the first video. I have another project on 4.8 and have no problem what so ever with it. Just when I do these tutorials to make this type of game. Could it be a bug? Should I use 4.9 instead? Would it make a difference? Reason why I put this here is because these tutorials are all made in BP.

Never mind. Found out the problem. Had nothing to do with the BP.