Version 1.4.20, running for over a year using sqlite database.  (2 or 3
users)  No errors logged in roundup.log or /var/log/messages. "sqlite3
db pragma integrity_check" finds no errors. The email to the admin says:

Traceback (most recent call last):
  File "/usr/lib/python2.6/site-packages/roundup/cgi/client.py", line
1059, in renderContext
    result = pt.render(self, None, None, **args)
  File "/usr/lib/python2.6/site-packages/roundup/cgi/engine_zopetal.py",
line 108, in render
    getEngine().getContext(c), output, tal=1, strictinsert=0)()
  File
"/usr/lib/python2.6/site-packages/roundup/cgi/TAL/TALInterpreter.py",
line 192, in __call__
    self.interpret(self.program)
  File
"/usr/lib/python2.6/site-packages/roundup/cgi/TAL/TALInterpreter.py",
line 236, in interpret
    handlers[opcode](self, args)
  File
"/usr/lib/python2.6/site-packages/roundup/cgi/TAL/TALInterpreter.py",
line 666, in do_useMacro
    self.interpret(macro)
  File
"/usr/lib/python2.6/site-packages/roundup/cgi/TAL/TALInterpreter.py",
line 236, in interpret
    handlers[opcode](self, args)
  File
"/usr/lib/python2.6/site-packages/roundup/cgi/TAL/TALInterpreter.py",
line 411, in do_optTag_tal
    self.do_optTag(stuff)
  File
"/usr/lib/python2.6/site-packages/roundup/cgi/TAL/TALInterpreter.py",
line 396, in do_optTag
    return self.no_tag(start, program)
  File
"/usr/lib/python2.6/site-packages/roundup/cgi/TAL/TALInterpreter.py",
line 391, in no_tag
    self.interpret(program)
  File
"/usr/lib/python2.6/site-packages/roundup/cgi/TAL/TALInterpreter.py",
line 236, in interpret
    handlers[opcode](self, args)
  File
"/usr/lib/python2.6/site-packages/roundup/cgi/TAL/TALInterpreter.py",
line 689, in do_defineSlot
    self.interpret(slot)
  File
"/usr/lib/python2.6/site-packages/roundup/cgi/TAL/TALInterpreter.py",
line 236, in interpret
    handlers[opcode](self, args)
  File
"/usr/lib/python2.6/site-packages/roundup/cgi/TAL/TALInterpreter.py",
line 462, in do_setLocal_tal
    self.engine.setLocal(name, self.engine.evaluateValue(expr))
  File
"/usr/lib/python2.6/site-packages/roundup/cgi/PageTemplates/TALES.py",
line 225, in evaluate
    return expression(self)
  File
"/usr/lib/python2.6/site-packages/roundup/cgi/PageTemplates/Expressions.py",
line 193, in __call__
    return self._eval(econtext)
  File
"/usr/lib/python2.6/site-packages/roundup/cgi/PageTemplates/Expressions.py",
line 188, in _eval
    return render(ob, econtext.vars)
  File
"/usr/lib/python2.6/site-packages/roundup/cgi/PageTemplates/Expressions.py",
line 94, in render
    ob = ob()
  File "/usr/lib/python2.6/site-packages/roundup/cgi/templating.py",
line 2657, in batch
    if check(permission, userid, self.classname, itemid=id)]
  File "/usr/lib/python2.6/site-packages/roundup/security.py", line 196,
in hasPermission
    userid, itemid):
  File "/usr/lib/python2.6/site-packages/roundup/security.py", line 51,
in test
    if not self.check(db, userid, itemid):
  File "/var/lib/roundup/schema.py", line 103, in customer_issue
    issue_topics = db.issue.get(itemid, 'topic')
  File
"/usr/lib/python2.6/site-packages/roundup/backends/rdbms_common.py",
line 1672, in get
    prop = self.properties[propname]
KeyError: 'topic'