(svn r24250) -Fix [FS#5154]: Do not immediately display error messages from parsing the cfg file, but schedule them for displaying after the GUI is prepared for it.

src/error.h

@@ -42,6 +42,9 @@ public:
 	~ErrorMessageData();
 	ErrorMessageData(StringID summary_msg, StringID detailed_msg, uint duration = 0, int x = 0, int y = 0, uint textref_stack_size = 0, const uint32 *textref_stack = NULL);
 
+	void SetDParam(uint n, uint64 v);
+	void SetDParamStr(uint n, const char *str);
+
 	void CopyOutDParams();
 };