No matter WHAT I do - whether in Single Player or (local, TCP/IP multiplayer) - items placed in either version of the Stash, simply disappear between game sessions. (2) Both the 'Shared' and 'Normal' stashes are basically useless. (The game crashes unpredictably, at any or all times, especially when there a lot of things happening on the screen.) (1) Random crashes with the 'Address Violation C0000' error, particularly when moving items in the Stash.
So far, the bugs in version 2.0 have made the game next to unplayable for me (and I think I have given it more than a fair chance).