yes I agree of course that as much language as possible should be working perfectly.
I do not know how and when, but I would like to be informed when linguistic versions are working again.
I even find this bug very urgent (here is a risk to loose many new Folders forever with this kind of bug).
This 2 former identified bugs (crash when deleting or loading share or saves) appear to be linked to this only French version:
http://fold.it/portal/995041
http://fold.it/portal/node/995211
These bugs were resolved by going to English version.
The issue is in the .op file. There are a couple of format strings that do not contain all of the format characters.
e.g.
msgid "%d of %d bonus%s gained. "
msgstr "%d bonificaciones%s no conseguidas"