Archive: NSIS Uninstall Error HELP!!!!


NSIS Uninstall Error Help Please
HELP, My xvid and ffdshow codecs are corrupt and when I try to uninstall them I get an "NSIS Error" "Installer Verification Failed"
How am i supposed to get rid of this? Does it have something to do with the NCSC command and deleting the folder or something in a dos prompt? Please help im stuck and clueless. Thanks Atron


You don't have to shout in your topic title.

If your installer worked fine before, the file is probably damaged by hardware failure or virus infection.

You can use this /NCRC command line switch to skip the verification, but you might get unexpected behavior.


Sorry for shouting I fixed it. Anyway how do u use the NCRC command? do i just need the full path /NCRC"path" ?? Also, does anyone know anything about the problem with Xvid files crashing explorer. This is where it all of this began, so I tried to uninstall xvid and I get the NSIS error.


Since you have been able to install the software, you should seriously check your system for virii or other things that can cause corruptions.

Just add /NCRC after the filename like:

setup.exe /NCRC

(it is possible that the author of the installer has disabled this possibility)


I have checked it for viruses, spyware etc. its clean , still have no clue whats goin on.


Have you tried just installing the software over the existing installation. If that does not work atleast it would rewrite the uninstaller and hopefully fix the CRC error.

Vytautas ;)


yes, when I try to install over it I get the same error everytime, i ve even tried to install other programs with nullsoft installers.


Does this error happen when you try to install aswell as uninstall or not. If both then you should download the package and try again.

Vytautas


the package? Ive redownloaded the newest ffdshow and xvid codecs and it still gives it


Are you able to test these installers on another computer as it seems that your hardware, e.g. RAM, could be faulty. As a computer tech I have seen several similar problems when RAM or other hardware was faulty.

Vytautas


What is the exact error you get? NSIS doesn't show "Installer Verification Failed". In any case, I would suggest you test that your temporary directory is defined right. Earlier versions of NSIS didn't verify it and if the installers you're downloading are compressed using bzip2 they probably require the temporary directory to initialize.