Hello, I encountered the same issue. It looks like the systemd service unit file was updated, but there appears to be a shell syntax error as well as a potential issue with the declared systemd type of the service. ("simple" works, whereas "notify" does not.)
I am attaching a patch that should correct the two aforementioned issues in the systemd service unit file. Vefa
--- debian/dnscrypt-proxy.service.orig 2015-03-08 12:00:00.000000000 +0000 +++ debian/dnscrypt-proxy.service 2015-03-08 12:00:00.000000000 +0000 @@ -5,10 +5,10 @@ Requires=dnscrypt-proxy.socket [Service] -Type=notify +Type=simple Environment=DNSCRYPT_PROXY_RESOLVER_NAME=opendns DNSCRYPT_PROXY_USER=_dnscrypt-proxy "DNSCRYPT_PROXY_OPTIONS=" EnvironmentFile=-/etc/default/dnscrypt-proxy -ExecStart=/usr/sbin/dnscrypt-proxy +ExecStart=/usr/sbin/dnscrypt-proxy \ --user=${DNSCRYPT_PROXY_USER} \ --resolver-name=${DNSCRYPT_PROXY_RESOLVER_NAME} \ $DNSCRYPT_PROXY_OPTIONS