NSIS Error : cannot install softwares

NSIS Error

The installer you are trying to use is corrupted 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).

This error can occur when you try to install software using the NSIS installer.

Note: NSIS is itself an installer free, many open source software use. Thus, it is likely that this error occurs when installing software, especially those from sourceforge.net.

The error message indicates that the installation file does not have the right amount of control, and more clear: the downloaded file is corrupted.

Note: If you are not Anglophobe and have understood the error message, do NOT run the installation software from the command line with / NCRC: It's unnecessary and it could only attract you trouble.

Solving this problem

The software you are installing from a CD or DVD

It is likely that your disc is dirty, scratched or damaged. Try cleaning with a soft cloth and suitable cleaning liquid.

If you have additional problems with your CD or DVD (or DivX DVD Movies jerky, error message when copying files from CD / DVD to the hard disk, etc.), consider a lack of equipment your CD / DVD.

The software you want to install has been downloaded from the Internet

Typically the software is to install a single executable file (ie extension. Exe) that you open to install this software.

In this case, try:
A. Clear your browser cache by following this article.
B. Visit the site again to download the software and download it again. Try a new installation

If the error persists and / or software, for several different, try one by one the following methods and each time try to redownload the software after emptying the browser cache.

/! \ Important Note: The problem is that the downloaded file is corrupted, if you do apply one of the following methods without downloading the software again, it will not help!

Note: If you have an nVidia hardware, please first try the method V.

I. Close or disable any software download, download manager or download accelerator. Try a new download and a new installation.

II. Rename the downloaded software to install (install.exe or if the display of file extensions is enabled). Try a new download and a new installation.

III. Find if another website offers the same software for download. Caution: Make sure the site in question is safe to do so. Try a new installation.

IV. Temporarily disable your security system: Antivirus, Firewall, antimalware. Do not neglect this and think to disable the Windows Firewall. After trying this, trying a new download and a new installation. That this method has worked or not, do not forget to reactivate the system of protection (or to make easier to restart the computer).

V. Check My Computer> Control Panel> Add / Remove Programs if a software called "nVidia firewall is installed. If so, uninstall it, reboot, try downloading a new software and then install a new installation. If it worked, you have to install the faster another firewall (or turn on Windows Firewall)

VI. Consider a problem with a virus or malware. Please follow this procedure. After disinfection, hold a new download and a new installation.

VII. Consider a hardware problem on your network connection.
If you are connected with an Ethernet cable, try to change it.
If you use a wireless connection, try a wired connection USB or Ethernet.
Try changing your network card or adapter.

VIII. Run Scandisk or another repair tool hard disk. After repair, try a new download and a new installation.

IX. Please download the software from a friend or from another machine, transfer it by using a USB key and then try to install it on your computer. If it works, the problem remains unsolved but diverted because all attempts have failed download. If so it is highly likely that many of your downloads are also corrupted.

Source: http://nsis.sourceforge.net/Why_do_I_get_NSIS_Error