It could be a vCenter database connection or corruption issue. Did you check your vCenter database connection? The install error can be caused by a few different reasons. I would check the vmMSSQLCmd.log file to see what input caused the install to error out. Here is another article on the error in which their issue was the SQL password: http://www.blackforce.co.uk/2013/01/23/vmware-vcenter-single-sign-on-sql-error-32010
Best Regards,
B