I bought tickets at this number a couple of years ago:

011 49 18 05996633. When you hear a human voice just ask do you speak English. Worked for me.

What is the exact date you want to travel? I will have a go myself and see if I can see anything wrong. I am sure it's not all sold out yet, so don't pay double just yet.

Lavandula

The Bahn site has a contact phone number which i have used in the past. Speaking English is NOT a problem. SPEND the money and you'll actually get THE answer and not a bunch of theoreticals.

How do you spell Warsaw when you enter it in the box? Is it Warszawa? What date?

I am traveling on July 20. I tried booking from Berlin Zoo and Berlin HBF to Warszawa. I'll try giving them a call using your number scatcat. I tried calling the contact number on the website and got a recording. Maybe because it is the middle of the night in Germany. Thanks to all for your help and responses. I was pretty panicked when I first got the message. The Bus runs every other day, with July 20 being an off day and airfare is 4x the train price.

I tried myself and no pronlem at all. 29 Euro saving fare, 49.1 Euro standard fare, including reservation.
Try again, and good luck!

I tried it also. Berlin to Warszawa. 7-20-12 Only my price shows 39€ for 2nd and 49€ for 1st. except for the 6:40 AM it is 29€

I'm getting the same prices as you. 98 E for two first class tickets. The problem is when I get past the proceed, past the seat reservations,and finally to the purchase stage is then I get the problem. Same thing every time, all trains. I'm trying to book the 9:40 departure, arriving Warsaw at 15:15.

agedude

Yes, it did the same for me. Hopefully it's just a technical problem on their site. If it doesn't work in the morning, try calling that number. Or if you're still up at 8 Germany time, try then.

No need to call.
Other than regular train connections within Germany, the Berlin -Warszawa -Express can only be booked 60 not 92 days in advance.