Various bug and typo fixes.

src/engine.c

@@ -4396,7 +4396,6 @@ void engine_step(struct engine *e) {
   if (e->policy & engine_policy_cosmology) {
     e->time_old = e->time;
     cosmology_update(e->cosmology, e->physical_constants, e->ti_current);
-    gravity_update(e->gravity_properties, e->cosmology);
     e->time = e->cosmology->time;
     e->time_step = e->time - e->time_old;
   } else {
@@ -4405,6 +4404,10 @@ void engine_step(struct engine *e) {
     e->time_step = (e->ti_current - e->ti_old) * e->time_base;
   }
 
+  /* Update the softening lengths */
+  if (e->policy & engine_policy_self_gravity)
+    gravity_update(e->gravity_properties, e->cosmology);
+
   /* Prepare the tasks to be launched, rebuild or repartition if needed. */
   engine_prepare(e);
 

src/hydro_properties.c

@@ -87,7 +87,8 @@ void hydro_props_init(struct hydro_props *p,
   p->minimal_temperature = parser_get_opt_param_float(
       params, "SPH:minimal_temperature", hydro_props_default_min_temp);
 
-  if (p->initial_temperature < p->minimal_temperature)
+  if ((p->initial_temperature != 0.) &&
+      (p->initial_temperature < p->minimal_temperature))
     error("Initial temperature lower than minimal allowed temperature!");
 
   /* Hydrogen mass fraction */
@@ -159,7 +160,7 @@ void hydro_props_print(const struct hydro_props *p) {
     message("Initial gas temperature set to %f", p->initial_temperature);
 
   if (p->minimal_temperature != hydro_props_default_min_temp)
-    message("Minimal gas temperature set to %f", p->initial_temperature);
+    message("Minimal gas temperature set to %f", p->minimal_temperature);
 }
 
 #if defined(HAVE_HDF5)

src/parallel_io.c

@@ -141,7 +141,7 @@ void readArray_chunk(hid_t h_data, hid_t h_plist_id,
 
   /* Clean-up h if necessary */
   const float h_factor_exp = units_h_factor(internal_units, props.units);
-  if (cleanup_h && h_factor_exp != 0.f && exist != 0) {
+  if (cleanup_h && h_factor_exp != 0.f) {
     const double h_factor = pow(h, h_factor_exp);
 
     /* message("Multipltying '%s' by h^%f=%f", props.name, h_factor_exp,
@@ -229,7 +229,7 @@ void readArray(hid_t grp, struct io_props props, size_t N, long long N_total,
     /* Write the first chunk */
     const size_t this_chunk = (N > max_chunk_size) ? max_chunk_size : N;
     readArray_chunk(h_data, h_plist_id, props, this_chunk, offset,
-                    internal_units, ic_units);
+                    internal_units, ic_units, cleanup_h, h);
 
     /* Compute how many items are left */
     if (N > max_chunk_size) {