--- plaympeg.c.old	2014-09-04 08:55:10.646132150 +0200
+++ plaympeg.c	2014-09-04 08:56:57.465210820 +0200
@@ -262,7 +262,7 @@
       answer[i] = c;
     }
     answer[i] = 0;
-    fprintf(stderr, answer + 4);
+    fprintf(stderr, "%s", answer + 4);
   }
   while(answer[3] == '-');