diff --git a/src/engine.cpp b/src/engine.cpp
index 8e6c41ba00..ec09133113 100644
--- a/src/engine.cpp
+++ b/src/engine.cpp
@@ -808,6 +808,8 @@ bool IsEngineBuildable(EngineID engine, VehicleType type, CompanyID company)
 	/* check if it's available */
 	if (!HasBit(e->company_avail, company)) return false;
 
+	if (e->info.string_id == STR_NEWGRF_INVALID_ENGINE) return false;
+
 	if (type == VEH_TRAIN) {
 		/* Check if the rail type is available to this company */
 		const Company *c = Company::Get(company);
diff --git a/src/group_gui.cpp b/src/group_gui.cpp
index 3ce991bee9..94e5ac9426 100644
--- a/src/group_gui.cpp
+++ b/src/group_gui.cpp
@@ -381,12 +381,12 @@ public:
 	{
 		switch (widget) {
 			case GRP_WIDGET_ALL_VEHICLES:
-				DrawString(r.left + WD_FRAMERECT_LEFT + 8, r.right - WD_FRAMERECT_RIGHT - 8, r.top + WD_MATRIX_TOP,
+				DrawString(r.left + WD_FRAMERECT_LEFT + 8, r.right - WD_FRAMERECT_RIGHT - 8, r.top + WD_FRAMERECT_TOP + 1,
 						STR_GROUP_ALL_TRAINS + this->vehicle_type, IsAllGroupID(this->group_sel) ? TC_WHITE : TC_BLACK);
 				break;
 
 			case GRP_WIDGET_DEFAULT_VEHICLES:
-				DrawString(r.left + WD_FRAMERECT_LEFT + 8, r.right - WD_FRAMERECT_RIGHT - 8, r.top + WD_MATRIX_TOP,
+				DrawString(r.left + WD_FRAMERECT_LEFT + 8, r.right - WD_FRAMERECT_RIGHT - 8, r.top + WD_FRAMERECT_TOP + 1,
 						STR_GROUP_DEFAULT_TRAINS + this->vehicle_type, IsDefaultGroupID(this->group_sel) ? TC_WHITE : TC_BLACK);
 				break;
 
diff --git a/src/lang/english.txt b/src/lang/english.txt
index 44587b8595..7cd03f652d 100644
--- a/src/lang/english.txt
+++ b/src/lang/english.txt
@@ -2397,6 +2397,13 @@ STR_NEWGRF_BUGGY                                                :{WHITE}NewGRF '
 STR_NEWGRF_BUGGY_ARTICULATED_CARGO                              :{WHITE}Cargo/refit information for '{1:ENGINE}' differs from purchase list after construction. This might cause autorenew/-replace to fail refitting correctly.
 STR_NEWGRF_BUGGY_ENDLESS_PRODUCTION_CALLBACK                    :{WHITE}'{1:STRING}' caused an endless loop in the production callback.
 
+# 'User removed essential NewGRFs'-placeholders for stuff without specs.
+STR_NEWGRF_INVALID_CARGO                                        :<invalid cargo>
+STR_NEWGRF_INVALID_CARGO_ABBREV                                 :??
+STR_NEWGRF_INVALID_CARGO_QUANTITY                               :{COMMA} of <invalid cargo>
+STR_NEWGRF_INVALID_ENGINE                                       :<invalid engine>
+STR_NEWGRF_INVALID_INDUSTRYTYPE                                 :<invalid industry>
+
 # Sign list window
 STR_SIGN_LIST_CAPTION                                           :{WHITE}Sign List - {COMMA} Sign{P "" s}
 
diff --git a/src/newgrf.cpp b/src/newgrf.cpp
index fa2686680c..21804428af 100644
--- a/src/newgrf.cpp
+++ b/src/newgrf.cpp
@@ -6131,6 +6131,34 @@ static void CalculateRefitMasks()
 	}
 }
 
+/** Check for invalid engines */
+static void FinaliseEngineArray()
+{
+	Engine *e;
+
+	FOR_ALL_ENGINES(e) {
+		if (e->grffile == NULL) {
+			const EngineIDMapping &eid = _engine_mngr[e->index];
+			if (eid.grfid != INVALID_GRFID || eid.internal_id != eid.substitute_id) {
+				e->info.string_id = STR_NEWGRF_INVALID_ENGINE;
+			}
+		}
+	}
+}
+
+/** Check for invalid cargos */
+static void FinaliseCargoArray()
+{
+	for (CargoID c = 0; c < NUM_CARGO; c++) {
+		CargoSpec *cs = CargoSpec::Get(c);
+		if (!cs->IsValid()) {
+			cs->name = cs->name_single = cs->units_volume = STR_NEWGRF_INVALID_CARGO;
+			cs->quantifier = STR_NEWGRF_INVALID_CARGO_QUANTITY;
+			cs->abbrev = STR_NEWGRF_INVALID_CARGO_ABBREV;
+		}
+	}
+}
+
 /** Add all new houses to the house array. House properties can be set at any
  * time in the GRF file, so we can only add a house spec to the house array
  * after the file has finished loading. We also need to check the dates, due to
@@ -6259,6 +6287,9 @@ static void FinaliseIndustriesArray()
 				indsp->conflicting[i] = MapNewGRFIndustryType(indsp->conflicting[i], indsp->grf_prop.grffile->grfid);
 			}
 		}
+		if (!indsp->enabled) {
+			indsp->name = STR_NEWGRF_INVALID_INDUSTRYTYPE;
+		}
 	}
 }
 
@@ -6610,9 +6641,15 @@ static void AfterLoadGRFs()
 	}
 	_grf_line_to_action6_sprite_override.clear();
 
+	/* Polish cargos */
+	FinaliseCargoArray();
+
 	/* Pre-calculate all refit masks after loading GRF files. */
 	CalculateRefitMasks();
 
+	/* Polish engines */
+	FinaliseEngineArray();
+
 	/* Set the block size in the depot windows based on vehicle sprite sizes */
 	InitDepotWindowBlockSizes();
 
diff --git a/src/strings.cpp b/src/strings.cpp
index f07139f0a0..834bb52719 100644
--- a/src/strings.cpp
+++ b/src/strings.cpp
@@ -964,7 +964,7 @@ static char *FormatString(char *buff, const char *str, int64 *argv, uint casei,
 
 				assert(e != NULL);
 
-				if (e->name != NULL) {
+				if (e->name != NULL && e->info.string_id != STR_NEWGRF_INVALID_ENGINE) {
 					buff = strecpy(buff, e->name, last);
 				} else {
 					buff = GetStringWithArgs(buff, e->info.string_id, NULL, last);
diff --git a/src/vehicle_gui.h b/src/vehicle_gui.h
index fab4b6bb6f..f84a80105d 100644
--- a/src/vehicle_gui.h
+++ b/src/vehicle_gui.h
@@ -59,7 +59,7 @@ enum {
 
 static inline bool ValidVLWFlags(uint16 flags)
 {
-	return (flags == VLW_STANDARD || flags == VLW_SHARED_ORDERS || flags == VLW_STATION_LIST || flags == VLW_DEPOT_LIST || flags == VLW_GROUP_LIST);
+	return (flags == VLW_STANDARD || flags == VLW_SHARED_ORDERS || flags == VLW_STATION_LIST || flags == VLW_DEPOT_LIST || flags == VLW_GROUP_LIST || flags == VLW_WAYPOINT_LIST);
 }
 
 int DrawVehiclePurchaseInfo(int left, int right, int y, EngineID engine_number);