I have a Data.fs that I've been building up over many versions of Zope. Somewhere along the line, I noticed that "Undo" stopped working in many situations. Now it's almost never usable. I get errors like Error Type: UndoError Error Value: Couldn't undo change to '\x00\x00\x00\x00\x00\x00\x19r' because non-undoable transaction I've also noticed that Versions can really ruin my day. I don't want to try that right now in order to give an example, but it has meant having to completely destroy the parent folder of the Version. I've just considered these as developmental bugs, but with the release of 2.4.0 today, I decided to try Undo and Versions with a fresh database. They worked flawlessly. So...I'm guessing that my Data.fs file is a bit messed up. I looked at some of the utilities, but they don't appear to be appropriate. I tried running the ZODB recovery script, but it didn't find anything to recover. I'm considering trying to export everything that I can and then import them into a fresh database. I did this long ago, but I had far fewer objects in my root directory. I'd like to avoid doing it now. Any suggestions? Thank you. --kyler