Hi Rodrigo,
Please try setting up the condition records properly. Iessa has already suggested the path to maintain the output condition records. When you double click on the codtion records, you will reach a screen where you can provide details of the output device. also, please make sure that you check the 'print immediately' checkbox. However, the print immediately option would not have any direct bearing on the condition record being picked automatically. It only tells the system whether the print is to be generated immediately or spooled for later printing.
I also suggest that you get your basis team to check your printer settings. I have experienced such issues in the past and they were related to the output device.
Hope this helps.
Regards,
Sumita Mittra