I tried to reinstall it and now got an NSIS error. will this ever end?
I personally never have issues patching, now NSIS error is rather unusual anywhere, it indicates corruption or has been altered from its original form from say a virus.
Edit - using final option is not recommended as you could be running something virus infected.
In the first instance have you done a clean boot ? http://support.microsoft.com/kb/929135
Otherwise i would ensure basic checks are done open a command prompt as admin
chkdsk c: /f
and finally run a memory test on your ram.
From the NSIS source
1.Clear your browser's cache.
2. Disable any download accelerators or managers and download the installer again.
3. Rename the installer so it is a simple one-word name with no special characters (without removing the .exe suffix) Example: install.exe
4. Download the installer from another source approved by the software developer or publisher. It might be corrupted on the server, or the connection to the server is unreliable from your location.
5. Update your anti-virus software (if installed) and download the installer again.
6. Disable your anti-virus software and download the installer again.
7. Download the installer using another computer and copy it to the original computer.
8. If you have the nVidia firewall installed, uninstall the program and download the installer again.
9. Scan for, and remove malware and viruses on your system.
10. Scan the hard drive using scandisk, chkdsk, or any other hard drive repair tool.
11. For people of ROMANIA who use FireFox in Romanian language try this tutorial: http://www.tutorialepc.ro/nsis-error...roblema-2.html