Originally Posted by
chunky649
Hmmm, the pass was working great all day saturday, until I tried getting through the SNCF gate at La Defence. I then tried the ticket at the other side - the Metro station side, and it didn't work either.
Perhaps I somehow invalidated the ticket by putting it through the SNCF ticket gate?
This was some time between 12:30am (technically sunday) and 1am.
Hmm, I'd say it shouldn've been, but you could've triggered their 'time restriction' system (there is a time limit imposed on each 'period' ticket, meaning such a ticket, once used, can only be used next time in 10 or so minutes, so to prevent it from been used by more than one person). RER and Metro are two different systems and theoretically no such restriction should exist in your case, but who knows...
P.S. RER line A is not SNCF, it's managed by RATP, as is metro. I presume you tried to get access to the RER station...