this is the copy of the error. It gets to, removing previous versions of limewire .. then

The installer you are trying to use is corrupted or incomplete.
This could be the result of a damaged disk, failed download or virus.

You may want to contact the author of this installer to obtain a new copy.

It may be possible to skip this check using the /NCRC command line switch ( NOT RECOMMENDED )

ive download the installer a couple time, both the online and offline installer , im not sure if i have a damaged disk because other installers seems to work (installers outside limewire) and , i have used a virus scan that shows no evidence of a virus.
And, how would i use the/NCRC command line switch ??

any other ways to help me solve this problem? i have other versions of limewire installed, and they work fine ,im currently using 4.8 and tried to upgrade and it has failed.. and i was wondering, if u do not have previous versions of limewire, does the installer auto skip that checking process, so, i can uninstall the other versions manually. Okay, thankyou