Wow, that's a bit weird.

Try deleting the LW preferences folder (make sure no version of LW is running), see points 2 & 3 below.
Fixes for LimeWire

If you've used an old version of LW in the past, you could have a preferences folder in the location described in point 2 and/or point 3...so make sure to check both The folder within Application Data's hidden, so you'll have to show hidden files & folders to be able to see it.

Once you've deleted that folder, try reinstalling & see what happens. Use the offline installer (not the recommended one).
http://www.limewire.com/english/content/download.shtml
Please use the installer from the official site...it's safer.

If that doesn't help, once the installation's finished, try the advice here for changing language within LW
How to change language