Hi Patsy,
I see two issues.
RE: (SELECT SUM(LABOR_HOURS) FROM WO_TASK WHERE WO_TASK.WOO_AUTO_KEY=WO_OPERATION.WOO_AUTO_KEY and not(WO_TASK.SYSUR_AUTO_KEY in [125,126,127,129,130,132,131,249]))
You should assign your sum a column name otherwise it will be automatically generated and probably...