Comment 2 for bug 1261235

" el subproceso instalado el script pre-removal devolvió el código de salida de error 2". This is simply a localized version of an apt-get error (or dpkg?). Anyway, the english string would read:

subprocess installed pre-removal script returned error exit status 2

Also, the dpkg-terminal-log reads:

Desinstalando gtk2-engines-pixbuf:i386 ...
Desinstalando nginx-full ...
awk: cannot open /etc/nginx/nginx.conf (No such file or directory)
invoke-rc.d: initscript nginx, action "stop" failed.
dpkg: error al procesar nginx-full (--purge):
 el subproceso instalado el script pre-removal devolvió el código de salida de error 2

In english this would be:

Uninstalling gtk2-engines-pixbuf:i386 ...
Uninstalling nginx-full ...
awk: cannot open /etc/nginx/nginx.conf (No such file or directory)
invoke-rc.d: initscript nginx, action "stop" failed.
dpkg: error processing nginx-full (--purge):
 subprocess installed pre-removal script returned error exit status 2