I subsequently converted an unimproved Air Shard to a Death Shard - building a Shrine on that worked. However I still cannot build on that converted Shrine.
Here is a Savegame for it: http://dl.dropbox.com/u/9164057/Death%20Shard%20by%20Blackstead.EleSav
Not sure if you need the Debug file, so here it is too: http://dl.dropbox.com/u/9164057/debug.err
Oh, the Death Spell Infection doesnt seem to be working either - at least I never managed to actually spread Enchantments with it.
