Love the unique regex custom field JIRA plugin but deleting a field that uses it fails for me.
java.lang.NullPointerException
at com.atlassian.jira.issue.customfields.persistence.OfBizCustomFieldValuePersister.removeAllValues(OfBizCustomFieldValuePersister.java:190)
at com.atlassian.jira.issue.customfields.persistence.EagerLoadingOfBizCustomFieldPersister.removeAllValues(EagerLoadingOfBizCustomFieldPersister.java:71)
at sun.reflect.GeneratedMethodAccessor3633.invoke(Unknown Source)....
I tried disassociating the field from all screens but still cannot delete it. Any suggestions? :-)