fixed problem on startup

data/scenarios/Gryphon_Mountain.cfg

@@ -120,7 +120,7 @@ Defeat:
 		[message]
 		id=msg8_1a
 		description=Konrad
-		message="What is this place? That is one tall mountain!
+		message="What is this place? That is one tall mountain!"
 		[/message]
 		[message]
 		id=msg8_2b

data/scenarios/The_Lost_General.cfg

@@ -112,7 +112,7 @@ Defeat:
 		[/message]
 		[message]
 		description=Delfador
-		message=Underground roads once led to the differents parts of the complex, but now everything lies in ruins."
+		message="Underground roads once led to the differents parts of the complex, but now everything lies in ruins."
 		id=msg13_2
 		[/message]
 	[/event]

src/config.cpp

@@ -525,6 +525,15 @@ void config::read(const std::string& data,
 				break;
 
 			case VALUE:
+				if(c == '[') {
+					if(line_sources != NULL) {
+						const line_source src = get_line_source(*line_sources,line);
+						std::cerr << src.file << " " << src.fileline << ": ";
+					}
+
+					std::cerr << "WARNING: square bracket found in string. Is this a run-away string?\n";
+				}
+				
 				if(c == '"') {
 					in_quotes = !in_quotes;
 					has_quotes = true;