throw std::runtime_error instead of std::string (PR #1011)

+ add more information about location of yaml parser error.

source/SAM.cpp

@@ -113,7 +113,7 @@ void SAMCard::SaveSnapshot(YamlSaveHelper& yamlSaveHelper)
 bool SAMCard::LoadSnapshot(YamlLoadHelper& yamlLoadHelper, UINT version)
 {
 	if (version < 1 || version > kUNIT_VERSION)
-		throw std::string("Card: wrong version");
+		throw std::runtime_error("Card: wrong version");
 
 	return true;
 }