Minecraft Forums

I recently installed optifine for minecraft 1.5.1 and it doesn't work. it would freeze right after 3 seconds of loading the world. I tried everything!!!!!!

What mods do you have and did you delete META-INF in minecraft.jar BEFORE installing optifine for 1.5.1?

Quote from The_MiningCrafter

What mods do you have and did you delete META-INF in minecraft.jar BEFORE installing optifine for 1.5.1?

I did delete META inf and i have no other mods installed

Do you have, say, Minecraft Forge like two of the three versions of the mod require?

Quote from THEHCKEABLE

Do you have, say, Minecraft Forge like two of the three versions of the mod require?

Forge is not required for Optifine... though Optifine and Forge are compatible

I donated to optifine in 1.4.7 and now in 1.5.1 I don't have my cape anymore

honestly i dont know what to do plz help me!

Weird, happens to me also.

Cmon guys i really need help

hell mi minecraft wont even start anymore with any b
mod on it... and yes i know what im doing im not a nube at this...

Well I suggest using MultiMC ( http://forkk.net/MultiMC4/ ). It really makes modding easier. Download it, download MC 1.5.1, login into the client, close it, right click the instance, click 'Edit Mods', under the minecraft.jar tab, click the 'Add' button to add Optifine to minecraft.jar, close the windows, right click the instance again, click 'View Folder', navigate to minecraft/bin/minecraft.jar, open it with an archiving program, and delete META-INF. After you do that, run the instance and log in. Optifine should be successfully installed. Installing Optifine otherwise should of been flawless and very simple. I don't see why you guys are having trouble, even a mob newbie could do it. Here is the instance/client in MultiMC that I use and how it is setup: ~~~~~~~~~~~~~~~~~~

I have the same problem bro, i tried reinstalling it and everything and mine freezes at the same place!

Sharing the minecraft.jar file is a big no-no but you can google for a fresh copy if you forgot to back yours up. I've found things like MCPatcher and MagicLoader don't always install the mods correctly, which is why I tend to do mine manually.

Have you tried this (This is for windows, you can get Mac instructions here:http://www.minecraft...i/Crash#Mac_OSX):

1. Browse to the folder that contains your minecraft.exe launcher
2. With no files selected (left click on background to deselect), Shift+Right Click anywhere in background of the window, and choose "Open command window here"
3. Copy the following code:
"%ProgramFiles%/Java/jre7/bin/java" -Xms1G -Xmx1G -cp Minecraft.exe net.minecraft.LauncherFrame

4. Right click in the command window, select Paste and then press enter
5. Login, start Single or Multiplayer and reproduce the crash
6. Once you have obtained the crash report, right click on it, select all and press Enter to copy, then paste it to the proper mod thread for assistance

If you post the error log back here enclose it in the following tags:
[code][spoiler][code] Error Log [/code][/spoiler]
[/CODE]

Nobody likes to look at a wall of text!

Are you placing it in mods?
Dat is teh no.

MCpatcher is incompatible with Optifine, maybe that's your problem.

http://optifined.net/adloadx.php?f=OptiFine_1.5.1_HD_U_A6.zip

try that
it worked for me