Its worth a try, it worked for me. Read this post i did and try it!

'Ok this may work for you or it may not but if you've tried everything else to get Limewire working again and still have had no luck try this....

1) First you need to get this program http://www.tune-up.com/ it's a free download of course

2) Now once you've installed the program and opened it, down the left hand side there will be options to choose from. You need to click on the one called 'Optimize & Improve'.

3) Now you'll see three more options, you will need to click on the second one down 'Tuneup RegistryDefrag' Once done just sit back and let it run

4) Once its finished it will restart your computer. Then you should be able to open LimeWire again.'

Good Luck