Minecraft Corrupt Jar After Deleting Meta-inf

I'm trying to install OptiFine on minecraft and I'm taking the following steps:

1. Open minecraft with archive manager
2. Delete the Meta-Inf folder
3. Open OptiFine with archive manager
4. Copy contents of OptiFine to minecraft archive
5. Close both archives
6. Open minecraft with java -jar minecraft.jar
7. At this point I get `Invalid or corrupt jarfile minecraft(1) (copy).jar!

Even just deleting the meta-inf folder gives me this error. I'm on linux mint 12. Any help is greatly appreciated!

2

2 Answers

You must rename it to: minecraft.jar.

You need to make sure your jar is named minecraft.jar

I would suggest deleting your bin folder and letting Minecraft download a fresh copy before trying this again.