Mike Mikkelsen writes:
Hello all,
My Zope (2.1.6) installation has just become *very* unstable. My most recent addition has been ZPatterns and LoginManager. My passwords for my virtual sites (using SiteRoot) are no longer accessable by my account and superuser can't access them. The site "disappears" three or four times a day without errors. And clicking on Product Management link sometimes returns "No Data" notice in the browser and then Zope crashes.
This is the error that shows up on the console when going to Product Management or accessing the subdir that holds the subdir that has LoginManager:
<date> ERROR (200) ZODB Couldn't Load State for '\000\000\000\000\000\000\002\017' The error means that Zope could not unpickle the object with the given object id.
I, once, had this problem. I had changed (deleted?) a class in one of my products. An object in the ZODB referenced this class, unpickling failed. The problem disappeared after restoring the old state. I, now, delete objects in Zope before I delete classes in a project that is required by the objects. Dieter