Looks like some system data were missing when upgrading from 1.5.X to 1.6.x.

Run the following SQL query in your contour database and you should be able to create the organization. You don't have to restart the server.
INSERT INTO `documentfield` (`id`,`name`,`description`,`scope`,`refId`,`dataTypeId`,`createdDate`,`modifiedDate`,`createdBy`,`modifiedBy`) VALUES
(13,'originalEstimate','Original Estimate',1,0,1,NULL,NULL,NULL,NULL),
(14,'remainingEstimate','Remaining Estimate',1,0,1,NULL,NULL,NULL,NULL),
(15,'timeSpent','Time Spent',1,0,1,NULL,NULL,NULL,NULL);