When I open My level i’m getting 10 or 12 of these errors on moving platform BP’s in my world.
Does does this mean??
Hi AttemptD,
Do your platform BPs use Timelines? This likely has something to do with curves in a Timeline. Did you copy Timelines from somewhere else?
Yes actually. I changed certain timeline from Play to Play From Start and it solved a ton of them. I did copy a couple. I think that may fix it. I’ll check it immediately.
It seems you may have been correct.
A couple of my BPS needed some love. Multiple time lines in each platform to adjust material parameters, movement, particle scaling…
Just needed to clean up and get rid of some duplicates.
I had 16 errors now I have 2. I’d say I’m on my way. 
Thank you!!!
up top!!
Yea, there’s a known issue with copying/duplicating Timelines that messes up their curves. I’m sure there was a bug in for it, but I haven’t been able to find it. I may end up opening a new one. I’ll let you know if I find old one or make a new one. Glad you got yours straightened out, though!
For me it went away when i renamed all of curves to a different name. And timeline of course. Just go in copied timeline and select curve and rename it and Voila! 
Cheers! hope that helps.