Windows - Delayed write error

[Lockheed]

I just did an update to newest VBox and since then I am getting constant errors of this sort whenever windows is trying to read or write a file from network-shared drive (ext4 from Arch host).

After the update, I had to install virtualbox-ext-oracle because the system would not start otherwise, complaining about missing USN 2.0. This is weird as so far it worked without it just fine.

What can I do about this bloody error? It does not occur on files saved on windows' own partition.