2 files changed, 24 insertions, 6 deletions

diff --git a/modules/gdscript/gdscript.cpp b/modules/gdscript/gdscript.cpp
index 05c2558417..ec1682d470 100644
--- a/modules/gdscript/gdscript.cpp
+++ b/modules/gdscript/gdscript.cpp
@@ -2106,6 +2106,12 @@ void GDScriptLanguage::thread_enter() {
 }
 
 void GDScriptLanguage::thread_exit() {
+	// This thread may have been created before GDScript was up
+	// (which also means it can't have run any GDScript code at all).
+	if (!GDScript::func_ptrs_to_update_thread_local) {
+		return;
+	}
+
 	GDScript::_fixup_thread_function_bookkeeping();
 
 	bool destroy = false;
@@ -2323,6 +2329,19 @@ void GDScriptLanguage::reload_all_scripts() {
 			}
 			elem = elem->next();
 		}
+
+#ifdef TOOLS_ENABLED
+		if (Engine::get_singleton()->is_editor_hint()) {
+			// Reload all pointers to existing singletons so that tool scripts can work with the reloaded extensions.
+			List<Engine::Singleton> singletons;
+			Engine::get_singleton()->get_singletons(&singletons);
+			for (const Engine::Singleton &E : singletons) {
+				if (globals.has(E.name)) {
+					_add_global(E.name, E.ptr);
+				}
+			}
+		}
+#endif
 	}
 
 	//as scripts are going to be reloaded, must proceed without locking here
diff --git a/modules/gdscript/tests/gdscript_test_runner.cpp b/modules/gdscript/tests/gdscript_test_runner.cpp
index f91dc83f2c..361ca276bb 100644
--- a/modules/gdscript/tests/gdscript_test_runner.cpp
+++ b/modules/gdscript/tests/gdscript_test_runner.cpp
@@ -78,31 +78,30 @@ void init_autoloads() {
 			scn.instantiate();
 			scn->set_path(info.path);
 			scn->reload_from_file();
-			ERR_CONTINUE_MSG(!scn.is_valid(), vformat("Can't autoload: %s.", info.path));
+			ERR_CONTINUE_MSG(!scn.is_valid(), vformat("Failed to instantiate an autoload, can't load from path: %s.", info.path));
 
 			if (scn.is_valid()) {
 				n = scn->instantiate();
 			}
 		} else {
 			Ref<Resource> res = ResourceLoader::load(info.path);
-			ERR_CONTINUE_MSG(res.is_null(), vformat("Can't autoload: %s.", info.path));
+			ERR_CONTINUE_MSG(res.is_null(), vformat("Failed to instantiate an autoload, can't load from path: %s.", info.path));
 
 			Ref<Script> scr = res;
 			if (scr.is_valid()) {
 				StringName ibt = scr->get_instance_base_type();
 				bool valid_type = ClassDB::is_parent_class(ibt, "Node");
-				ERR_CONTINUE_MSG(!valid_type, vformat("Script does not inherit from Node: %s.", info.path));
+				ERR_CONTINUE_MSG(!valid_type, vformat("Failed to instantiate an autoload, script '%s' does not inherit from 'Node'.", info.path));
 
 				Object *obj = ClassDB::instantiate(ibt);
-
-				ERR_CONTINUE_MSG(!obj, vformat("Cannot instance script for Autoload, expected 'Node' inheritance, got: %s.", ibt));
+				ERR_CONTINUE_MSG(!obj, vformat("Failed to instantiate an autoload, cannot instantiate '%s'.", ibt));
 
 				n = Object::cast_to<Node>(obj);
 				n->set_script(scr);
 			}
 		}
 
-		ERR_CONTINUE_MSG(!n, vformat("Path in autoload not a node or script: %s.", info.path));
+		ERR_CONTINUE_MSG(!n, vformat("Failed to instantiate an autoload, path is not pointing to a scene or a script: %s.", info.path));
 		n->set_name(info.name);
 
 		for (int i = 0; i < ScriptServer::get_language_count(); i++) {