You installed it incorrectly.
And I'm saying this before anyone makes fun of you, but be sure to ask this to the creator, or at least in the thread. Also, be prepared for, er, people claiming you to be a troll.
No, it isn't a virus. You are either using an un-updated version of the patcher, or you are using Xau's HD Patcher, which is discontinued. If you want to fix the problem, delete the bin file in your Minecraft folder and wait for an update.
You probably used Xau's Patcher which isnt updated anymore... You can delete your version file and let MC reload if you want to fix it crashing.. And if you used Kahr's HD patcher, its not a virus u just used it wrong.. also, a virus wouldn't only mess up minecraft, it would mess up ur entire PC. Get ur facts
And I'm saying this before anyone makes fun of you, but be sure to ask this to the creator, or at least in the thread. Also, be prepared for, er, people claiming you to be a troll.
I don't mean to be off-topic, but that's awfully rude. He might be mistaken, as he said, he is new and has got the game a few weeks ago.
YOU ARE DOING IT WRONG!
Rude or not, he's right.
The OP doesn't know what a virus is. ._.
Random Minecraft Seed Generator
http://sundergaming.com/3kbcraft/map/map.html
3KillaBytes Minecraft Server Map (Tectonicus)
IP: minecraft.sundergaming.com:25565
Phantom's Survival Server [3KBCraft]