This is what worked for me....was upgrading limewire v4.8.1 to v4.9.29, crashed in the middle of install, (with both windows & windows offline installer) I just restarted windows after the crash & tried again using the offline installer, worked just fine. I think my problem came from putting one version over top of another, & by restarting, it wrote to the registry that I did not have limewire & let it install. I used the so-called 'corrupted' file.