NSIS Error?

[Random.?]

I recently DLed the FF installer, but as I try to double click it this error shows up:

NSIS Error
The installer you are trying to use is either corrupt or incomplete.
This could be the result of a damaged disk, a failed download or a 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).

I've at least tried 3 of the clients in which have the FF mod DL posted on the home page, and they all have this same result. I would like to know if theirs something I'm doing wrong or its just from the Clients before trying every single one.

[Bakedbean]

I recently DLed the FF installer, but as I try to double click it this error shows up:

NSIS Error
The installer you are trying to use is either corrupt or incomplete.
This could be the result of a damaged disk, a failed download or a 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).

I've at least tried 3 of the clients in which have the FF mod DL posted on the home page, and they all have this same result. I would like to know if theirs something I'm doing wrong or its just from the Clients before trying every single one.
This most likely something on your end that is causing the problem. I did a search on google and found this information.
http://nsis.sourceforge.net/Why_do_I_get_NSIS_Error

Also might want to make sure windows is updated.