diff --git a/src/Bindings/LuaState.cpp b/src/Bindings/LuaState.cpp
index ca7f6b255..45a066efe 100644
--- a/src/Bindings/LuaState.cpp
+++ b/src/Bindings/LuaState.cpp
@@ -677,6 +677,11 @@ void cLuaState::Push(void * a_Ptr)
 {
 	ASSERT(IsValid());
 
+	// Investigate the cause of this - what is the callstack?
+	LOGWARNING("Lua engine encountered an error - attempting to push a plain pointer");
+	LogStackTrace();
+	ASSERT(!"A plain pointer should never be pushed on Lua stack");
+	
 	lua_pushnil(m_LuaState);
 	m_NumCurrentFunctionArgs += 1;
 }
@@ -1265,6 +1270,8 @@ void cLuaState::LogStack(const char * a_Header)
 
 void cLuaState::LogStack(lua_State * a_LuaState, const char * a_Header)
 {
+	UNUSED(a_Header);  // The param seems unused when compiling for release, so the compiler warns
+	
 	LOGD((a_Header != NULL) ? a_Header : "Lua C API Stack contents:");
 	for (int i = lua_gettop(a_LuaState); i > 0; i--)
 	{
diff --git a/src/Bindings/ManualBindings.cpp b/src/Bindings/ManualBindings.cpp
index 2f3f3ee91..461186d3b 100644
--- a/src/Bindings/ManualBindings.cpp
+++ b/src/Bindings/ManualBindings.cpp
@@ -1321,7 +1321,9 @@ static int tolua_cPluginManager_ForEachCommand(lua_State * tolua_S)
 	private:
 		virtual bool Command(const AString & a_Command, const cPlugin * a_Plugin, const AString & a_Permission, const AString & a_HelpString) override
 		{
-			lua_rawgeti( LuaState, LUA_REGISTRYINDEX, FuncRef);  /* Push function reference */
+			UNUSED(a_Plugin);
+			
+			lua_rawgeti(LuaState, LUA_REGISTRYINDEX, FuncRef);  /* Push function reference */
 			tolua_pushcppstring(LuaState, a_Command);
 			tolua_pushcppstring(LuaState, a_Permission);
 			tolua_pushcppstring(LuaState, a_HelpString);
@@ -1396,7 +1398,10 @@ static int tolua_cPluginManager_ForEachConsoleCommand(lua_State * tolua_S)
 	private:
 		virtual bool Command(const AString & a_Command, const cPlugin * a_Plugin, const AString & a_Permission, const AString & a_HelpString) override
 		{
-			lua_rawgeti( LuaState, LUA_REGISTRYINDEX, FuncRef);  /* Push function reference */
+			UNUSED(a_Plugin);
+			UNUSED(a_Permission);
+			
+			lua_rawgeti(LuaState, LUA_REGISTRYINDEX, FuncRef);  /* Push function reference */
 			tolua_pushcppstring(LuaState, a_Command);
 			tolua_pushcppstring(LuaState, a_HelpString);
 
diff --git a/src/MersenneTwister.h b/src/MersenneTwister.h
index 784ac605d..f4c7b0699 100644
--- a/src/MersenneTwister.h
+++ b/src/MersenneTwister.h
@@ -207,7 +207,7 @@ inline void MTRand::seed( uint32 *const bigSeed, const uint32 seedLength )
 	initialize(19650218UL);
 	int i = 1;
 	uint32 j = 0;
-	int k = ( N > seedLength ? N : seedLength );
+	int k = ( (uint32)N > seedLength ? (uint32)N : seedLength );
 	for( ; k; --k )
 	{
 		state[i] =