Two times when i picked up gold (don't know if it was dropped) i also got a controlled error:

java.util.ConcurrentModificationException
at java.util.AbstractList$Itr.checkForComodification(Unknown Source)
at java.util.AbstractList$Itr.next(Unknown Source)
at de.adom.jade.items.MutableItemList.addItem(SourceFile:140)
at de.adom.jade.items.MutableItemList.recombineListRequiredFor(SourceFile:604)
at de.adom.jade.items.Inventory.getTotalWeight(SourceFile:116)
at de.adom.jade.beings.BurdenLevel.of(SourceFile:125)
at de.adom.jade.beings.Being.getBurdenLevel(SourceFile:4785)
at de.adom.jade.beings.Being.getSpeed(SourceFile:1203)
at de.adom.jade.beings.Being.resetUsedActionEnergy(SourceFile:1113)
at de.adom.jade.beings.Being.actImpl(SourceFile:710)
at de.adom.jade.kernel.actors.AbstractActor.act(SourceFile:58)
at de.adom.jade.kernel.actors.ActorReference.act(SourceFile:60)
at de.adom.jade.kernel.GameLoop.run(SourceFile:111)

After continuing the pieces of gold were added to the stash in my inventory (at least i think so; i didn't calculate it) .
But one or two other items which i had picked up before were missing.

I picked up gold before and after that without an error message.

Seems to be a similar bug as in Jade 0.2.0 : http://www.adom.de/forums/project.php?issueid=499
which is marked as a duplicate of the fixed (for 0.2.1) http://www.adom.de/forums/project.php?issueid=495

I got the same thing, picked up some gold then got an error message. The gold was gone from the floor, but most of my stuff (not all, and not anything I had currrently equipped) had disappeared from my inventory.

Duplicate of http://www.adom.de/forums/project.php?issueid=605