Problem with Breeding Pokemon

Hi everyone.

Some weeks ago I was trying to breed an Aerodactyl. After many fail eggs I got the nature i was looking for.

So i started training it and lvling it up, today i wanted to see how it did in the Random Battles.

But i couldnt check, cause the game kept kicking me out saying 'There was a problem with my pokemon'

I dont know what the hell is wrong, it was breed without Pokegen/pokesav and it was lvled the same way.

This only happens when Aerodactyl is in my party, if i swap it with another pokemon i can go online without problems.

Anyone heard of something like this before?

Also, I've attached the .pkm, any help is apreciated. I have no idea how a in-game breed and raised pokemon can be blocked from GTS, but if i can 'correct' it with Pokegen/sav, I'll do it.

I wasted big time on that Aerodactyl.

Try reading the rules for Random Battle, you'll find your answer there.

Unrelated questions:

When you finally got the nature you wanted, you also happened to get 31 IVs in Speed and Attack??

And when you were EV training (or doing it with Pokegen) did you just count wrong? (or a typo?)