compile error said to contact framework team because they need a repro for bug, so that is what i am doing. here is what i know - i saved my project last night and everything was working fine. then when i loaded it today and tried to play in editor there was a compile error on a blueprint. it is weird because it was fine last night and i changed nothing. upon investigation, nodes in blueprint had been disconnected, i dont know how, and it was failing to get outputs from an “on begin overlap” event. every output from event was giving me an error. i copied all nodes into a blank blueprint, and then copied them back, and it worked after reconnecting a couple things. but then when i close project, it does same all over again. this seems like a pretty serious bug, so if you guys need any more info from me i am happy to help.
just tried something new - i can literally copy nodes from blueprint, delete them all, then paste them back, and it works. im sure it will be messed up again after i close it, but interesting.