# dpkg -r nginx
dpkg: error processing nginx (--remove):
 Package is in a very bad inconsistent state - you should
 reinstall it before attempting a removal.
Errors were encountered while processing:
 nginx



# dpkg --install nginx_0.4.13-2_i386.deb
Selecting previously deselected package nginx.
(Reading database ... 25365 files and directories currently installed.)
Preparing to replace nginx 0.4.13-2 (using nginx_0.4.13-2_i386.deb) ...
Stopping nginx: invoke-rc.d: initscript nginx, action "stop" failed.
dpkg: warning - old pre-removal script returned error exit status 1
dpkg - trying script from the new package instead ...
Stopping nginx: invoke-rc.d: initscript nginx, action "stop" failed.
dpkg: error processing nginx_0.4.13-2_i386.deb (--install):
 subprocess new pre-removal script returned error exit status 1
Starting nginx: invoke-rc.d: initscript nginx, action "start" failed.
dpkg: error while cleaning up:
 subprocess post-installation script returned error exit status 1
Errors were encountered while processing:
 nginx_0.4.13-2_i386.deb