diff --git a/lib/general b/lib/general
index ae6def0..0b7c0af 100644
--- a/lib/general
+++ b/lib/general
@@ -122,7 +122,7 @@ pre_install() {
 		api-events_update i1
 		sudo apt-get -y -qq install dialog
 		sudo apt-get -y -qq install software-properties-common
-		sudo apt-get -y -qq install python-software-properties
+		[[ $(check_osname) != "bionic" ]] && sudo apt-get -y -qq install python-software-properties
 		sudo apt-get -y -qq install pwgen
 		sudo apt-get -y -qq install unzip
 		sudo apt-get -y -qq install zip
diff --git a/lib/site-ssl b/lib/site-ssl
index 8d74120..2da116d 100644
--- a/lib/site-ssl
+++ b/lib/site-ssl
@@ -80,6 +80,9 @@ site_ssl_on() {
 	# Single cert
 	elif [[ ! -a /etc/letsencrypt/live/$domain/fullchain.pem ]]; then
 		sudo certbot certonly --webroot -w /var/www/$root/htdocs/ $domset $param
+	
+	elif [[ -a /etc/letsencrypt/live/$domain/fullchain.pem ]]; then
+		echo "${blu}Certificate for $domain already exist and found, wait while we configure your server to use it!${end}"
 	fi
 	
 	
diff --git a/plugins/site b/plugins/site
index 867c782..ffd2dfe 100644
--- a/plugins/site
+++ b/plugins/site
@@ -23,12 +23,6 @@ if [[ ! $(conf_read nginx) == "true" ]]; then
 	exit 1
 fi
 
-# Check if user entered arg before option and correct it.
-if [[ -n $cache && ($type == "-cache" || $type == "-root" || $type == "-root-path" || $type == "-subdomain" || $type == "-ignore-ssl" || $type == "-wildcard") ]]; then
-	type=${3,,}
-	cache=${2,,}
-fi
-
 
 # Extract value if exist
 if [[ $domain == "-mysql="* ]]; then
@@ -44,6 +38,12 @@ if [[ $cache == "-root="*  || $cache == "-subdomain="* || $cache == "-root-path=
 	cache=$(echo "${cache}" | cut -d'=' -f 1 -s)
 fi
 
+# Check if user entered arg before option and correct it.
+if [[ -n $cache && ($type == "-cache" || $type == "-root" || $type == "-root-path" || $type == "-subdomain" || $type == "-ignore-ssl" || $type == "-wildcard") ]]; then
+	type=${3,,}
+	cache=${2,,}
+fi
+
 
 # Check if site is sub-domain
 if [[ -n $domain && $type =~ ^(-html|-php|-mysql|-wp|-wpsubdir|-wpsubdom|-parked|-proxy|-ssl-on|-force-redirect)$ ]]; then
diff --git a/plugins/webinoly b/plugins/webinoly
index ae739da..0bede88 100644
--- a/plugins/webinoly
+++ b/plugins/webinoly
@@ -232,7 +232,7 @@ elif [[ $opt == "-uninstall" ]]; then
 				swap_delete
 			fi
 			if [[ $(conf_read pre-packs) == true ]]; then
-				sudo apt-get -y -qq purge pwgen unzip > /dev/null
+				sudo apt-get -y -qq purge pwgen unzip zip > /dev/null
 				sudo apt-get -y -qq autoremove > /dev/null
 				conf_write pre-packs purged
 			fi
@@ -298,21 +298,21 @@ elif [[ $opt == "-clear-cache" ]]; then
 		exit 1
 	fi
 	if [[ $value == "redis" || $value == "all" ]]; then
-		if [[ $(conf_read php-tool) == "true" ]]; then
+		if [[ $(conf_read php-tool) == "true" && -a /etc/redis/redis.conf ]]; then
 			sudo redis-cli flushall
 			echo "${gre}- Redis Cache has been successfully cleared!${end}"
 		else
-			echo "${red}[ERROR] We can not clear Redis Cache because PHP is not installed!${end}"
+			echo "${red}[ERROR] We can not clear Redis Cache because is not installed!${end}"
 		fi
 	fi
 	if [[ $value == "memcache" || $value == "memcached" || $value == "all" ]]; then
-		if [[ $(conf_read php-tool) == "true" ]]; then
+		if [[ $(conf_read php-tool) == "true" && -a /etc/memcached.conf ]]; then
 			memhost=$(grep ^-l /etc/memcached.conf | cut -f 2 -d ' ')
 			memport=$(grep ^-p /etc/memcached.conf | cut -f 2 -d ' ')
 			echo flush_all > /dev/tcp/$memhost/$memport
 			echo "${gre}- Memcached has been successfully cleared!${end}"
 		else
-			echo "${red}[ERROR] We can not clear Memcache because PHP is not installed!${end}"
+			echo "${red}[ERROR] We can not clear Memcache because is not installed!${end}"
 		fi
 	fi
 	if [[ $value == "opcache" || $value == "all" ]]; then
@@ -355,10 +355,12 @@ elif [[ $opt == "-timezone" ]]; then
 	
 
 elif [[ $opt == "-version" || $opt == "-v" || $opt == "-V" ]]; then
+	[[ -z $(conf_read server-version) ]] && sver="Not installed!" || sver=$(conf_read server-version)
+	
 	echo "${blu}"
 	echo "Webinoly version: $(app_version)"
-	echo "Current stack version: $(conf_read server-version)"
-	echo "Available stack version: $(svr_version)"
+	echo "Current stack version: $sver"
+	[[ $sver != $(svr_version) ]] && echo "Available stack version: $(svr_version)"
 	echo "${end}"