diff --git a/src/config.F90 b/src/config.F90
index 2fa1ec7..ef75a98 100644
--- a/src/config.F90
+++ b/src/config.F90
@@ -182,6 +182,12 @@ module config
     logical            :: info
     character(len=255) :: line, name, value
     integer            :: l
+
+! external functions
+!
+    integer            :: iargc
+
+    intrinsic          :: iargc, getarg
 !
 !-------------------------------------------------------------------------------
 !
diff --git a/src/driver.F90 b/src/driver.F90
index e44be4a..96b6235 100644
--- a/src/driver.F90
+++ b/src/driver.F90
@@ -237,7 +237,8 @@ program amun
     write(*,'(4x,a4,5x,a4,11x,a2,12x,a6,7x,a3)') 'step', 'time', 'dt'          &
                                                  , 'blocks', 'ETA'
     write(*,'(i8,2(1x,1pe14.6),2x,i8,2x,1i4.1,"d",1i2.2,"h",1i2.2,"m"' //      &
-            ',1i2.2,"s",a1,$)') n, t, dt, get_nleafs(), ed, eh, em, es, char(13)
+            ',1i2.2,"s\r")',advance="no")                                      &
+                                        n, t, dt, get_nleafs(), ed, eh, em, es
   end if
 
 ! set the previous time needed to estimate the execution time
@@ -297,9 +298,8 @@ program amun
 !
     if (is_master())                                                           &
       write(*,'(i8,2(1x,1pe14.6),2x,i8,2x,1i4.1,"d",1i2.2,"h",1i2.2,"m"' //    &
-              ',1i2.2,"s",a1,$)') n, t, dt, get_nleafs(), ed, eh, em, es       &
-                                , char(13)
-
+              ',1i2.2,"s\r")',advance="no")                                    &
+                                        n, t, dt, get_nleafs(), ed, eh, em, es
 #if defined SIGNALS && defined MPI
 ! reduce termination flag over all processors
 !
diff --git a/src/mesh.F90 b/src/mesh.F90
index 6846049..d24ba3b 100644
--- a/src/mesh.F90
+++ b/src/mesh.F90
@@ -104,18 +104,18 @@ module mesh
 ! write the mesh statistics file header
 !
         write(funit,"('#')")
-        write(funit,"('#',4x,'step',5x,'time',11x,'leaf',4x,'meta'" //         &
+        write(funit,"('#',4x,'step',5x,'time',11x,'leaf',4x,'meta'," //        &
                            "6x,'coverage',8x,'AMR',11x,'block distribution')")
-        write(funit,"('#',27x,'blocks',2x,'blocks',4x,'efficiency'" //         &
-                                                        ",6x,'efficiency',$)")
-        write(funit,"(1x,a12,$)") 'level = 1'
+        write(funit,"('#',27x,'blocks',2x,'blocks',4x,'efficiency'," //        &
+                                              "6x,'efficiency')",advance='no')
+        write(funit,"(1x,a12)",advance="no") 'level = 1'
         do l = 2, maxlev
-          write(funit,"(2x,i6,$)") l
+          write(funit,"(2x,i6)",advance="no") l
         end do
 #ifdef MPI
-        write(funit,"(1x,a10,$)") 'cpu = 1'
+        write(funit,"(1x,a10)",advance="no") 'cpu = 1'
         do n = 2, ncpus
-          write(funit,"(2x,i6,$)") n
+          write(funit,"(2x,i6)",advance="no") n
         end do
 #endif /* MPI */
         write(funit,"('' )")
@@ -194,8 +194,8 @@ module mesh
 !
     if (is_master()) then
       write(*,*)
-      write(*,"(1x,a)"  ) "Generating the initial mesh:"
-      write(*,"(4x,a,$)") "generating level       =    "
+      write(*,"(1x,a)"             ) "Generating the initial mesh:"
+      write(*,"(4x,a)",advance="no") "generating level       =    "
     end if
 
     l = 1
@@ -204,7 +204,7 @@ module mesh
 ! print the level currently processed
 !
       if (is_master()) &
-        write(*,"(1x,i2,$)") l
+        write(*,"(1x,i2)",advance="no") l
 
 ! iterate over all data blocks at the current level and initialize the problem
 !
@@ -1450,16 +1450,16 @@ module mesh
 
 ! write down the statistics
 !
-        write(funit,"(2x,i8,2x,1pe14.8,2(2x,i6),2(2x,1pe14.8),$)")             &
+        write(funit,"(2x,i8,2x,1pe14.8,2(2x,i6),2(2x,1pe14.8))",advance="no")  &
                                                         n, t, nl, nm, cov, eff
-        write(funit,"('   ',$)")
+        write(funit,"('   ')",advance="no")
         do l = 1, maxlev
-          write(funit,"(2x,i6,$)") ldist(l)
+          write(funit,"(2x,i6)",advance="no") ldist(l)
         end do
 #ifdef MPI
-        write(funit,"('   ',$)")
+        write(funit,"('   ')",advance="no")
         do l = 1, ncpus
-          write(funit,"(2x,i6,$)") cdist(l)
+          write(funit,"(2x,i6)",advance="no") cdist(l)
         end do
 #endif /* MPI */
         write(funit,"('')")
diff --git a/src/problem.F90 b/src/problem.F90
index 01976dc..70f4c10 100644
--- a/src/problem.F90
+++ b/src/problem.F90
@@ -1562,7 +1562,7 @@ module problem
 
 ! return variable
 !
-    integer(kind=1) :: check_ref
+    integer(kind=4) :: check_ref
 
 ! local variables
 !