Having the same problem-bouncing in dock followed by nothing ... Java fixes not working, neither does altering the plist - terminal says:

/Applications/LimeWire/LimeWire.app/Contents/MacOS/prelude: line 1: dirname: command not found
/Applications/LimeWire/LimeWire.app/Contents/MacOS/prelude: line 19: /LimeWire: No such file or directory
/Applications/LimeWire/LimeWire.app/Contents/MacOS/prelude: line 19: exec: /LimeWire: cannot execute: No such file or directory

tried showing the contents of Limewire.app and manually launching "Limewire.app:MacOS:Limewire" per the advice of previous posting.

is there a fix to run limewire normally?