Blueprints crash

[Altarin]

Hello,
Yesterday i was casually playing factorio on one of the public servers. Without mods. And i was using my blueprints quite a lot in that session, but i didnt save any new ones.
Today after instaling new update to patch 0.17.20 i once again joined said server and i was playing for a bit, but when i tried to open my blueprint book my game crashed.
So i tried to rejoin, for a moment saw blueprint book still opened, without my blueprints, but i saw some books from people on server. And game craseh again. I tried one more time and it crashed again the exact same way.
So i tried to make completly new singleplayer default map, and as soon as i open my blueprints book, the game crashed.

Here is the log file

[orzelek]

Try in 0.17.21 - it was released to fix this bug.