Cannot delete Job Conductor entry

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Cannot delete Job Conductor entry

We have a job in Job Conductor that seems to be "locked" - it cannot be modified or deleted, but we need to delete it. When I attempt to delete it, I get an error message of "Delete Failed," and the Error Status is "Unexpected error, contact your administrator."
Following is the info from the "Last occurred error:" section of the "Information" tab for the job:
!!!Cannot flush and commit transaction.!!!
org.talend.administrator.common.persistence.hibernate.HibernateTransactionHolder.commitWithFlush(HibernateTransactionHolder.java:116)
org.talend.administrator.common.persistence.hibernate.HibernateTransactionHolder.commitWithFlushAndBeginNewTransaction(HibernateTransactionHolder.java:190)
org.talend.administrator.scheduler.business.job.deploy.VirtualServerJobDeployer.sendAndDeploy(VirtualServerJobDeployer.java:110)
org.talend.administrator.scheduler.business.job.deploy.JobServerJobDeployerCached.sendAndDeploy(JobServerJobDeployerCached.java:44)
org.talend.administrator.scheduler.business.ExecutionTaskHandler.deployJobUnit(ExecutionTaskHandler.java:603)
org.talend.administrator.scheduler.business.ExecutionTaskHandler$2.run(ExecutionTaskHandler.java:457)
Caused by: Batch update returned unexpected row count from update ; actual row count: 0; expected: 1
org.hibernate.jdbc.Expectations$BasicExpectation.checkBatched(Expectations.java:61)
org.hibernate.jdbc.Expectations$BasicExpectation.verifyOutcome(Expectations.java:46)
org.hibernate.jdbc.BatchingBatcher.checkRowCounts(BatchingBatcher.java:68)
org.hibernate.jdbc.BatchingBatcher.doExecuteBatch(BatchingBatcher.java:48)
org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:242)
org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:235)
org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:140)
org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:298)
org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27)
org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1000)
org.talend.administrator.common.persistence.hibernate.HibernateTransactionHolder.commitWithFlush(HibernateTransactionHolder.java:108)
org.talend.administrator.common.persistence.hibernate.HibernateTransactionHolder.commitWithFlushAndBeginNewTransaction(HibernateTransactionHolder.java:190)
org.talend.administrator.scheduler.business.job.deploy.VirtualServerJobDeployer.sendAndDeploy(VirtualServerJobDeployer.java:110)
org.talend.administrator.scheduler.business.job.deploy.JobServerJobDeployerCached.sendAndDeploy(JobServerJobDeployerCached.java:44)
org.talend.administrator.scheduler.business.ExecutionTaskHandler.deployJobUnit(ExecutionTaskHandler.java:603)
org.talend.administrator.scheduler.business.ExecutionTaskHandler$2.run(ExecutionTaskHandler.java:457)