Nope, reinstalling does nothing, the problem still persists.
LB was working fine yesterday, I was still able to import some games (including downloading the metadata and images, i.e. I was still able to tick the checkboxes). It was until this morning when I turned on my PC and started LB again, and launched the import ROM wizard, that I found out about this issue. BTW, LB is installed in a Win10 environment.