diff --git a/BlockLua.dll b/BlockLua.dll
index d2650e1..e30628e 100644
Binary files a/BlockLua.dll and b/BlockLua.dll differ
diff --git a/lualib/ltn12.lua b/lualib/ltn12.lua
index b42689a..7822e53 100644
--- a/lualib/ltn12.lua
+++ b/lualib/ltn12.lua
@@ -38,7 +38,7 @@ end
 -- chains a bunch of filters together
 -- (thanks to Wim Couwenberg)
 function filter.chain(...)
-    local n = table.getn(arg)
+    local n = #arg
     local top, index = 1, 1
     local retry = ""
     return function(chunk)
diff --git a/lualib/socket/url.lua b/lualib/socket/url.lua
index 0e31d8a..f05d91c 100644
--- a/lualib/socket/url.lua
+++ b/lualib/socket/url.lua
@@ -254,7 +254,7 @@ function parse_path(path)
 	path = path or ""
 	--path = string.gsub(path, "%s", "")
 	string.gsub(path, "([^/]+)", function (s) table.insert(parsed, s) end)
-	for i = 1, table.getn(parsed) do
+	for i = 1, #parsed do
 		parsed[i] = unescape(parsed[i])
 	end
 	if string.sub(path, 1, 1) == "/" then parsed.is_absolute = 1 end
@@ -272,7 +272,7 @@ end
 -----------------------------------------------------------------------------
 function build_path(parsed, unsafe)
 	local path = ""
-	local n = table.getn(parsed)
+	local n = #parsed
 	if unsafe then
 		for i = 1, n-1 do
 			path = path .. parsed[i]
diff --git a/src/util/libbl.lua b/src/util/libbl.lua
index fc29b10..838594c 100644
--- a/src/util/libbl.lua
+++ b/src/util/libbl.lua
@@ -466,7 +466,7 @@ local tsMeta = {
 			elseif name:find('::') then
 				local ns, rest = name:match('^([^:]+)::(.+)$')
 				if not ns then error('ts index: invalid name \''..name..'\'', 2) end
-				if not rest:find('::') and tsIsFunction(ns, rest) then
+				if not rest:find('::') and tsIsFunctionNs(ns, rest) then
 					error('ts index: can\'t call a namespaced function from lua', 2)
 				else
 					return valFromTs(_bllua_ts.getvar(name), name)
@@ -555,9 +555,9 @@ function bl.schedule(time, cb, ...)
 	return sch
 end
 function _bllua_schedule_callback(id)
-	id = tonumber(id)
+	id = tonumber(id) or error('_bllua_schedule_callback: invalid id: '..tostring(id))
 	local sch = bl._scheduleTable[id]
-	if not sch then error('_ts_schedule_callback: no schedule with id '..id) end
+	if not sch then error('_bllua_schedule_callback: no schedule with id '..id) end
 	bl._scheduleTable[id] = nil
 	sch.callback(unpack(sch.args))
 end
@@ -673,7 +673,7 @@ function bl.unhook(pkg, name, time)
 		if bl._hooks[pkg][name] then
 			if not time then
 				bl._hooks[pkg][name] = nil
-				if table.isempty(bl._hooks[pkg]) then
+				if table.empty(bl._hooks[pkg]) then
 					bl._hooks[pkg] = nil
 					deactivatePackage(pkg)
 				end
@@ -683,7 +683,7 @@ function bl.unhook(pkg, name, time)
 					error('bl.unhook: argument #3: time must be nil or one of '..
 						'\'before\' \'after\' \'override\'', 2) end
 				bl._hooks[pkg][name][time] = nil
-				if table.isempty(bl._hooks[pkg][name]) and table.empty(bl._hooks[pkg]) then
+				if table.empty(bl._hooks[pkg][name]) and table.empty(bl._hooks[pkg]) then
 					bl._hooks[pkg] = nil
 					deactivatePackage(pkg)
 				end
diff --git a/src/util/libts.lua b/src/util/libts.lua
index 2f00ce2..3ed7f8b 100644
--- a/src/util/libts.lua
+++ b/src/util/libts.lua
@@ -116,13 +116,13 @@ function io.open(fn, mode, errn)
 		local relfn = curfn and fn:find('^%./') and
 			curfn:gsub('[^/]+$', '')..fn:gsub('^%./', '')
 		if relfn then
-			local fi, err = io_open_absolute(relfn, mode, errn+1)
+			local fi, err = io_open_absolute(relfn, mode)
 			return fi, err, relfn
 		else
 			return nil, 'Invalid path', fn
 		end
 	else
-		local fi, err = io_open_absolute(fn, mode, errn+1)
+		local fi, err = io_open_absolute(fn, mode)
 		return fi, err, fn
 	end
 end