Thanks for the patience and apologies for the few users who met some after-upgrade errors.
The upgrade took some more time than estimated, because we had to copy and backup huge database files and before that, we needed to make room for them. Only after these operations the upgrade could start properly, and then it took over 24 hours of computing, when all content of the media pieces was moved to external storage. Now when the pieces are out of the database, it is faster to use and all of these upgrades will be simpler and faster.
One new much requested feature is implemented: Every resource can now belong to many groups.
One another important feature is almost done, but needs still some tuning, and that is easier creation of presentations. Since that is something that is not so nice to do online, unless you use applications especially designed for it, we want to give you an option to upload existing presentations created for example with Open Office Impress and convert them automatically in LeMill. Until we get that done, creating new presentations is disabled, because we feel that the current solution creates too many unusable media pieces.