Error Code 91010 using Pokemon Black's Game Sync

[Zeta]

I untucked a Pokemon from the Dream World, but now whenever I try to tuck one in I get the following error message:

Communication Error

Error Code: 91010

Nintendo Support says it's because I added someone to my Friends Roster/Pal Pad, but there is NOBODY on my Friend's Roster/Pal Pad. I can still get onto GTS just find. What's going on?

 

[Gligar13]

Try calling Nintendo..apparently there might be something wrong with your save.

 

[Zeta]

Not worth the trouble if they're just going to tell me to erase my save file. I probably got a hacked Pokemon on the GTS and they decided that hacked Pokemon should be banned from the Dreamworld but not GTS (wut).