diff --git a/src/loadGadget.cpp b/src/loadGadget.cpp
index 64b4970..03f0b78 100644
--- a/src/loadGadget.cpp
+++ b/src/loadGadget.cpp
@@ -69,18 +69,9 @@ SimuData *CosmoTool::loadGadgetMulti(const char *fname, int id, int loadflags)
   GadgetHeader h;
 
   if (id >= 0) {
-    int numDigits = 1;
-    int mul = 1;
-    while (mul < id)
-      {
-	mul *= 10;
-	numDigits++;
-      }
-    size_t len = numDigits+2+strlen(fname);
-    char *out_fname = new char[numDigits+2+strlen(fname)];
-
-    if (snprintf(out_fname, len, "%s.%d", fname, id) != len)
-      abort();
+    int k = snprintf(0, 0, "%s.%d", fname, id)+1;
+    char *out_fname = new char[k];
+    snprintf(out_fname, k, "%s.%d", fname, id);
      
     f = new UnformattedRead(out_fname);
     if (f == 0)
@@ -107,7 +98,7 @@ SimuData *CosmoTool::loadGadgetMulti(const char *fname, int id, int loadflags)
     h.npart[i] = f->readInt32();
   for (int i = 0; i < 6; i++)    
     h.mass[i] = f->readReal64();
-  h.time = f->readReal64();
+  data->time = h.time = f->readReal64();
   h.redshift = f->readReal64();
   h.flag_sfr = f->readInt32();
   h.flag_feedback = f->readInt32();
@@ -125,7 +116,7 @@ SimuData *CosmoTool::loadGadgetMulti(const char *fname, int id, int loadflags)
   for(int k=0; k<5; k++)
     {
       NumPart += h.npart[k];
-      NumPartTotal += h.npartTotal[k];
+      NumPartTotal += (id < 0) ? h.npart[k] : h.npartTotal[k];
     }
   data->NumPart = NumPart;
   data->TotalNumPart = NumPartTotal;
@@ -143,9 +134,9 @@ SimuData *CosmoTool::loadGadgetMulti(const char *fname, int id, int loadflags)
     f->beginCheckpoint();
     for(int k = 0, p = 0; k < 5; k++) {
       for(int n = 0; n < h.npart[k]; n++) {
-	data->Pos[p][0] = f->readReal32();
-	data->Pos[p][1] = f->readReal32();
-	data->Pos[p][2] = f->readReal32();
+	data->Pos[0][p] = f->readReal32();
+	data->Pos[1][p] = f->readReal32();
+	data->Pos[2][p] = f->readReal32();
 	p++;
       }
     }
@@ -170,9 +161,9 @@ SimuData *CosmoTool::loadGadgetMulti(const char *fname, int id, int loadflags)
     f->beginCheckpoint();
     for(int k = 0, p = 0; k < 5; k++) {
       for(int n = 0; n < h.npart[k]; n++) {
-	data->Vel[p][0] = f->readReal32();
-	data->Vel[p][1] = f->readReal32();
-	data->Vel[p][2] = f->readReal32();
+	data->Vel[0][p] = f->readReal32();
+	data->Vel[1][p] = f->readReal32();
+	data->Vel[2][p] = f->readReal32();
 	p++;
       }
     }