I'm trying to book tickets on the RENFE site for 9-11 September, and am having problems getting them to offer any services. My travel is in the north west (Vigo, Santiago, Salamanca), on a mix of local MD trains and long distance Alvia. For about the last month, the booking horizon in this area of Spain has been stuck at 7 September. All the trains are visible and bookable until that date, afterwards it shows some trains but then says they are "not available at the moment". The horizon has not advanced at all in that period, and my travel dates are now only 30 days away. Has anyone else had any problems getting bookings after this date? The problem seems to affect all trains on the lines out of Madrid Chamartin - eg to San Sebastian and Santander as well as Santiago. There seems to be no problem booking trains out of Atocha. Is it perhaps because another section of the high speed line is about to open? I did see somewhere that a new section had been energised recently, but nothing about the date of new services. Any info welcome.