I'm trying to put a Pokemon to sleep, but my game tells me 'game sync has run out of energy...' etc. I have not been able to put a Pokemon to sleep on this game (black1) since the PGL updates for this reason, but I have Pokemon sleeping on all 3 of my other genV games. I can't find any info on PGL about this, any thoughts?
Make sure you are using the DS you originally used for the game sync. Also make sure you have wi-fi connection. If these are both working then I don't know what is wrong. Maybe you need to wait a little longer before you use it again, kind of like you cant just use it two nights in a row or something. Just give it some time and check again tomorrow.