Hello, I am running 1.7.2 and this error has happened to me. It worked fine this morning. The servers are showing that they are running 1.6.4, when I know they are running 1.7.2, and if I try to join using 1.6.4, it works.
Actually, I don't think it is the same, but if you think so. Whatever, I really don't care anyway. Because the new Minecraft versions suck monkey balls. And I will never update from 1.5.2. Bye.
Why did you send three? Minecraft sucks.
This is intentional:
http://www.minecraftwiki.net/wiki/Horse
"As of the current snapshot, effects can only be seen on the horses through the particles, not through accessing the inventory of a horse, like effects would appear in a player's inventory menu."
Oh, so this error occurs due to a mismatch of version between the server and client? It was strange, because I did log on to the same server with 1.7.2, but later that day could not. The server must have reverted back to 1.6.4 without me knowing it.
However, when I did log onto the server successfully with 1.6.4, I DEFINITELY DID see the new particle effects as the players hit the ground, that WAS introduced in 1.7.2. This was very strange to me indeed.