Index: trunk/Ohana/src/relastro/src/launch_region_hosts.c
===================================================================
--- trunk/Ohana/src/relastro/src/launch_region_hosts.c	(revision 36870)
+++ trunk/Ohana/src/relastro/src/launch_region_hosts.c	(revision 36871)
@@ -9,21 +9,21 @@
   for (i = 0; i < regionHosts->Nhosts; i++) {
     char *syncfile = make_filename (CATDIR, regionHosts->hosts[i].hostname, regionHosts->hosts[i].hostID, "meanmags.sync");
-    truncate (syncfile, 0);
+    if (truncate (syncfile, 0)) fprintf (stderr, "trouble clearing syncfile %s\n", syncfile);
     free (syncfile);
 
     char *fitsfile = make_filename (CATDIR, regionHosts->hosts[i].hostname, regionHosts->hosts[i].hostID, "meanmags.fits");
-    truncate (fitsfile, 0);
+    if (truncate (fitsfile, 0)) fprintf (stderr, "trouble clearing fitsfile %s\n", fitsfile);
     free (fitsfile);
 
     char *imsyncfile = make_filename (CATDIR, regionHosts->hosts[i].hostname, regionHosts->hosts[i].hostID, "imagemags.sync");
-    truncate (imsyncfile, 0);
+    if (truncate (imsyncfile, 0)) fprintf (stderr, "trouble clearing imsyncfile %s\n", imsyncfile);
     free (imsyncfile);
 
     char *imfitsfile = make_filename (CATDIR, regionHosts->hosts[i].hostname, regionHosts->hosts[i].hostID, "imagemags.fits");
-    truncate (imfitsfile, 0);
+    if (truncate (imfitsfile, 0)) fprintf (stderr, "trouble clearing imfitsfile %s\n", imfitsfile);
     free (imfitsfile);
 
     char *loopsyncfile = make_filename (CATDIR, regionHosts->hosts[i].hostname, regionHosts->hosts[i].hostID, "loop.sync");
-    truncate (loopsyncfile, 0);
+    if (truncate (loopsyncfile, 0)) fprintf (stderr, "trouble clearing loopsyncfile %s\n", loopsyncfile);
     free (loopsyncfile);
   }
Index: trunk/Ohana/src/relastro/src/syncfile.c
===================================================================
--- trunk/Ohana/src/relastro/src/syncfile.c	(revision 36870)
+++ trunk/Ohana/src/relastro/src/syncfile.c	(revision 36871)
@@ -50,5 +50,5 @@
 int clear_sync_file (char *filename) {
   // delete file contents
-  truncate (filename, 0);
+  if (truncate (filename, 0)) fprintf (stderr, "trouble clearing file %s\n", filename);
 
   return TRUE;
Index: trunk/Ohana/src/relphot/src/launch_region_hosts.c
===================================================================
--- trunk/Ohana/src/relphot/src/launch_region_hosts.c	(revision 36870)
+++ trunk/Ohana/src/relphot/src/launch_region_hosts.c	(revision 36871)
@@ -22,21 +22,21 @@
   for (i = 0; i < regionHosts->Nhosts; i++) {
     char *syncfile = make_filename (CATDIR, regionHosts->hosts[i].hostname, regionHosts->hosts[i].hostID, "meanmags.sync");
-    truncate (syncfile, 0);
+    if (truncate (syncfile, 0)) fprintf (stderr, "trouble clearing syncfile %s\n", syncfile);
     free (syncfile);
 
     char *fitsfile = make_filename (CATDIR, regionHosts->hosts[i].hostname, regionHosts->hosts[i].hostID, "meanmags.fits");
-    truncate (fitsfile, 0);
+    if (truncate (fitsfile, 0)) fprintf (stderr, "trouble clearing fitsfile %s\n", fitsfile );
     free (fitsfile);
 
     char *imsyncfile = make_filename (CATDIR, regionHosts->hosts[i].hostname, regionHosts->hosts[i].hostID, "imagemags.sync");
-    truncate (imsyncfile, 0);
+    if (truncate (imsyncfile, 0)) fprintf (stderr, "trouble clearing imsyncfile %s\n", imsyncfile);
     free (imsyncfile);
 
     char *imfitsfile = make_filename (CATDIR, regionHosts->hosts[i].hostname, regionHosts->hosts[i].hostID, "imagemags.fits");
-    truncate (imfitsfile, 0);
+    if (truncate (imfitsfile, 0)) fprintf (stderr, "trouble clearing imfitsfile %s\n", imfitsfile);
     free (imfitsfile);
 
     char *loopsyncfile = make_filename (CATDIR, regionHosts->hosts[i].hostname, regionHosts->hosts[i].hostID, "loop.sync");
-    truncate (loopsyncfile, 0);
+    if (truncate (loopsyncfile, 0)) fprintf (stderr, "trouble clearing loopsyncfile %s\n", loopsyncfile);
     free (loopsyncfile);
   }
Index: trunk/Ohana/src/relphot/src/syncfile.c
===================================================================
--- trunk/Ohana/src/relphot/src/syncfile.c	(revision 36870)
+++ trunk/Ohana/src/relphot/src/syncfile.c	(revision 36871)
@@ -50,5 +50,5 @@
 int clear_sync_file (char *filename) {
   // delete file contents
-  truncate (filename, 0);
+  if (truncate (filename, 0)) fprintf (stderr, "trouble clearing file %s\n", filename);
 
   return TRUE;