The 'rhevm-report-setup' command fails with 'Failed while exporting ad hoc reports' exception message.

Issue

• The 'rhevm-report-setup' command fails with 'Failed while exporting ad hoc reports' exception message.
• Error:

2013-12-16 12:10:43::DEBUG::rhevm-reports-setup::473::root:: DB Restore completed successfully
2013-12-16 12:10:43::ERROR::rhevm-reports-setup::890::root:: Exception caught!
2013-12-16 12:10:43::ERROR::rhevm-reports-setup::891::root:: Traceback (most recent call last):
   File "/usr/bin/rhevm-reports-setup", line 789, in main
     exportAdHoc()
   File "/usr/share/ovirt-engine-reports/decorators.py", line 27, in wrapped_f
     raise Exception(instance)
Exception: Failed while exporting ad hoc reports

2013-12-16 12:10:43::DEBUG::rhevm-reports-setup::173::root:: editing reports datasource file /usr/share/ovirt-engine-reports/reports/resources/reports_resources/JDBC/data_sources/ovirt.xml