Index: trunk/pstamp/src/pstampdump.c
===================================================================
--- trunk/pstamp/src/pstampdump.c	(revision 25320)
+++ trunk/pstamp/src/pstampdump.c	(revision 25321)
@@ -79,5 +79,5 @@
     if (!readFitsFile(fileName, dumpHeader ? &header : NULL, dumpTable ? &array : NULL)) {
         psErrorStackPrint(stderr, "failed to process fits table from: %s\n", fileName);
-        return 1;
+        return PS_EXIT_DATA_ERROR;
     }
     if (dumpHeader) {
@@ -85,16 +85,23 @@
         if (!extname) {
             psErrorStackPrint(stderr, "failed to find EXTNAME in fits header of: %s\n", fileName);
-            return 1;
+            return PS_EXIT_DATA_ERROR;
         }
         psString req_name = psMetadataLookupStr(NULL, header, "REQ_NAME");
         if (!req_name) {
             psErrorStackPrint(stderr, "failed to find REQ_NAME in fits header of: %s\n", fileName);
-            return 1;
+            return PS_EXIT_DATA_ERROR;
         }
         if (!strcmp(extname, "PS1_PS_REQUEST")) {
             psString extver = psMetadataLookupStr(NULL, header, "EXTVER");
             if (!extver) {
-                psErrorStackPrint(stderr, "failed to find EXTVER in fits header of: %s\n", fileName);
-                return 1;
+                // work around bug in MOPS request files
+                // Accept an integer for the version number
+                psS32 extver_num = psMetadataLookupS32(NULL, header, "EXTVER");
+                if (extver_num) {
+                    psStringAppend(&extver, "%d", extver_num);
+                } else {
+                    psErrorStackPrint(stderr, "failed to find EXTVER in fits header of: %s\n", fileName);
+                    return PS_EXIT_DATA_ERROR;
+                }
             }
             printf("%s %s %s\n", extname, extver, req_name);
@@ -104,5 +111,5 @@
         } else {
             psErrorStackPrint(stderr, "do not recognize extname: %s in %s\n", extname, fileName);
-            return 1;
+            return PS_EXIT_DATA_ERROR;
         }
     }