Did you create tables or indexes named A22 or D13 (anything matching [ASDF]n, where
n is any number)? If so, that's probably the cause. Your database error log will likely have
more information.
Even when I'm populating trivial tables to test instances with large numbers of tables, I name
them with at least 8-15 characters (TABLE0001, FEATURECLASS0007). Long names are far more
likely to be self-documenting (the same goes for columns).
- V