2 files changed, 9 insertions, 9 deletions

diff --git a/src/Bindings/LuaState.cpp b/src/Bindings/LuaState.cpp
index f574dbe26..9c1e2865c 100644
--- a/src/Bindings/LuaState.cpp
+++ b/src/Bindings/LuaState.cpp
@@ -1535,7 +1535,7 @@ int cLuaState::CallFunctionWithForeignParams(
 	if (!PushFunction(a_FunctionName.c_str()))
 	{
 		LOGWARNING("Function '%s' not found", a_FunctionName.c_str());
-		lua_pop(m_LuaState, 2);
+		lua_settop(m_LuaState, OldTop);
 		return -1;
 	}
 
@@ -1543,7 +1543,7 @@ int cLuaState::CallFunctionWithForeignParams(
 	if (CopyStackFrom(a_SrcLuaState, a_SrcParamStart, a_SrcParamEnd) < 0)
 	{
 		// Something went wrong, fix the stack and exit
-		lua_pop(m_LuaState, 2);
+		lua_settop(m_LuaState, OldTop);
 		m_NumCurrentFunctionArgs = -1;
 		m_CurrentFunctionName.clear();
 		return -1;
@@ -1554,13 +1554,8 @@ int cLuaState::CallFunctionWithForeignParams(
 	if (ReportErrors(s))
 	{
 		LOGWARN("Error while calling function '%s' in '%s'", a_FunctionName.c_str(), m_SubsystemName.c_str());
-		// Fix the stack.
-		// We don't know how many values have been pushed, so just get rid of any that weren't there initially
-		int CurTop = lua_gettop(m_LuaState);
-		if (CurTop > OldTop)
-		{
-			lua_pop(m_LuaState, CurTop - OldTop);
-		}
+		// Reset the stack:
+		lua_settop(m_LuaState, OldTop);
 		
 		// Reset the internal checking mechanisms:
 		m_NumCurrentFunctionArgs = -1;
diff --git a/src/Bindings/ManualBindings.cpp b/src/Bindings/ManualBindings.cpp
index 2fbff11d3..20042a780 100644
--- a/src/Bindings/ManualBindings.cpp
+++ b/src/Bindings/ManualBindings.cpp
@@ -1988,6 +1988,11 @@ static int tolua_cPluginManager_CallPlugin(lua_State * tolua_S)
 	{
 		return 0;
 	}
+	if (Callback.m_NumReturns < 0)
+	{
+		// The call has failed, there are zero return values. Do NOT return negative number (Lua considers that a "yield")
+		return 0;
+	}
 	return Callback.m_NumReturns;
 }