"Kicked for flying" is an automatic thing by the server.

That said, I've heard of this happening with others, it appears to be a bug within sg.

Does this bug report sound like what's been happening to you?

 

The same thing happened to me. I went through a portal to spawn from a town, so I was in the town portal area, and suddenly I was kicked - same error message popped up...

I can't fly, so I don't know how I was kicked for flying... I have no donation features. XD

I want to confirm this as a bug, though not just in sg or whatever - it happened to me in Spawn (I didn't lose anything due to it, so I just forgot about it, then I saw this, and thought "hey, that happened to me!").

 

It seems to be a lag related bug. Sometimes it happens after crashing a boat or lagging through blocks. Happens to a lot of people for different reasons.

 

You might be right, cause I'm pretty sure I was lagging as I came through that portal, and then was kicked. I lag quite often when walking through portals from a town to the spawn area.

 

its not a bug actually, its most likely due to your internet speed, i used to play on here with Satellite internet, from the server list showed 5,000+ ms latency(surprised i could play at all!) i would get kicked for flying message a lot! but it was due to my high ping, using ladders, boats, even going down a water fall would sometimes cause me to be kicked for flying.

I've got faster internet now(1-20 ms ping) and sometimes when there's a lag spike because of the 3 computers we run in the house, i will get kicked for flying because of the time it took my computer to talk to server(ping!) during the lag spike

Hope This Helps!

 

I have a feeling Ninja is right... at times, our internet runs slowly... and Australian internet in general is quite slow.