jorb wrote:That sounds very strange. Could you try shift+mousewheeling into a container to make sure it really is empty.
If you're unaware ctopolon2, sometimes when you shift-click a travelers sack from your equipment window to unequip it, it disappears and wont show up in your inventory. But infact, it is, its in the slots that the very travelers sack itsself unlocked. Thus, being unable to see it and the game thinking that the outer-slots of your inventory are occupied (which they are, by that travelers sack). This is very much the cause of your problem.