Some bug fixes:

- 0.0 rather then -777.77 for a missing value in four circle
- No error output in TAS

fourmess.c

@@ -487,7 +487,7 @@ static int FourMessStoreIntern(pSICSOBJ self, SConnection * pCon,
   }
 
   /* get mf */
-  fMF = -777.77;
+  fMF = -0.00;
   pEva = (pEVControl) FindCommandData(pServ->pSics, "mf",
                                       "Environment Controller");
   if (pEva == NULL) {