diff -up CoinUtils-2.9.12/src/CoinMessageHandler.cpp.orig CoinUtils-2.9.12/src/CoinMessageHandler.cpp
--- CoinUtils-2.9.12/src/CoinMessageHandler.cpp.orig	2014-07-16 15:39:01.270614995 -0300
+++ CoinUtils-2.9.12/src/CoinMessageHandler.cpp	2014-07-16 15:39:18.130615641 -0300
@@ -820,7 +820,7 @@ CoinMessageHandler::operator<< (double d
 	  sprintf(messageOut_,g_format_,doublevalue);
 	  if (next != format_+2) {
 	    messageOut_+=strlen(messageOut_);
-	    sprintf(messageOut_,format_+2);
+	    sprintf(messageOut_,"%s",format_+2);
 	  }
 	}
 	messageOut_+=strlen(messageOut_);