[b]The AddDateTime lists a Hex of 3000 which can't work because the ConfirmOverwrite(1000) + AppendExisting(2000) equals 3000.[/b]
The values given in the documentation for appending date/time are right.
Hex 1000 Confirm before overwriting
Hex 2000 Append to existing file
Hex 3000 Append date/time
Hex 4000 Append id number
These options are exclusive, i.e. you cannot have "Confirm before overwriting" and "Append/date time" at the same time.