If everything fails and you are desperate to salvage data from a memory card, this technique can work.
In terminal emulator program (HyperTerminal, Putty, ZTerm) create a database file with the "FRD" command. This will create a new ORFIDB.BIN file in the same place as the previous one.
Immediately start dumping records with the special RC command. Type "RC 0 1000000" to start dumping database records starting with zero. Stop the output by pressing any key when the end of the data has been reached.