Doh! Sorry about that; I incorrectly anonymized the error message. It should have said:
Failed: PDOException: SQLSTATE[42000]: Syntax error or access violation: 1067 Invalid default value for 'column_2': ALTER TABLE {foo} CHANGE `column_1` `column_1` CHAR(20) NOT NULL DEFAULT '0000-00-00 00:00:00'; Array ( ) in db_change_field() (line 2984 of includes/database/database.inc).
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Tim Gustafson tjg@soe.ucsc.edu Baskin School of Engineering 831-459-5354 UC Santa Cruz Baskin Engineering 317B -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-