diff --git a/scripts/broadcast-wpad-discover.nse b/scripts/broadcast-wpad-discover.nse
index 0ab099d39..4d1bf8c40 100644
--- a/scripts/broadcast-wpad-discover.nse
+++ b/scripts/broadcast-wpad-discover.nse
@@ -119,7 +119,7 @@ local function dnsDiscover()
 			if ( status and response[1] ) then
 				return true, { name = name, ip = response[1] }
 			end
-		until( not(d:match("%.")) )
+		until( not(d) or not(d:match("%.")) )
 		
 	end
 	
diff --git a/scripts/ip-geolocation-geoplugin.nse b/scripts/ip-geolocation-geoplugin.nse
index 3d9174b5b..a76aaa551 100755
--- a/scripts/ip-geolocation-geoplugin.nse
+++ b/scripts/ip-geolocation-geoplugin.nse
@@ -41,7 +41,10 @@ local geoplugin = function(ip)
 	
 	local output = {}
 	table.insert(output, "coordinates (lat,lon): "..loc.geoplugin_latitude..","..loc.geoplugin_longitude)
-	table.insert(output,"state: ".. loc.geoplugin_regionName..", ".. loc.geoplugin_countryName)
+	-- The JSON response for regionName contains a null sometimes which is represented
+	-- as a table by the library.
+	local regionName = ("table" == type(loc.geoplugin_regionName)) and "Unknown" or loc.geoplugin_regionName
+	table.insert(output,"state: ".. regionName ..", ".. loc.geoplugin_countryName)
 	
 	return output
 end
diff --git a/scripts/membase-http-info.nse b/scripts/membase-http-info.nse
index 322605710..a6b77a3d4 100644
--- a/scripts/membase-http-info.nse
+++ b/scripts/membase-http-info.nse
@@ -112,7 +112,7 @@ local function cmdReq(host, port, url, result)
 			result[item] = { name = name, value = val }
 		end
 	end
-	return result
+	return true, result
 end
 
 action = function(host, port)
@@ -121,7 +121,11 @@ action = function(host, port)
 	
 	local result
 	for _, u in ipairs(urls) do
-		result = cmdReq(host, port, u, result)
+		status, result = cmdReq(host, port, u, result)
+	end
+
+	if ( not(result) or not(next(result)) ) then
+	 	return
 	end
 	
 	local output = tab.new(2)