Cannot see and generate time data

Hi all,

i built attribute/analytics/calculation views using HANA modeler, joining my analysis with M_TIME_DIMENSION system table, which was previously showing records.

For some reason, M_TIME_DIMENSION table is now empty. I tried to perform Generate Time Data (following this document: http://scn.sap.com/docs/DOC-25977) with no result (operation is completed succesfully but table is still empty).