I'm trying to install OptiFine on minecraft and I'm taking the following steps:
- Open minecraft with archive manager
- Delete the Meta-Inf folder
- Open OptiFine with archive manager
- Copy contents of OptiFine to minecraft archive
- Close both archives
- Open minecraft with
java -jar minecraft.jar
- 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!