while opening a layout in DESIGNrev and running netlist extraction by calibre LVS , this error was out :
** ORIGINAL DATABASE CONTAINED 64 BIT LONGS WHICH ARE NOT SUPPORTED ON THIS MACHINE TYPE.
"/root/Desktop/tx_YARAB/svdb/top.xdb" does not exist.
NOTE: Layout geometry commands will be unavailable since valid phdb database was not found.
NOTE: Cross reference commands will be unavailable since a valid cross reference (XDB) database was not found.
what is its meanning ?