Index: library/mongodb/README
===================================================================
diff -u -N -r247831dfafdb972eaf34feca38b7b67ce38c9155 -rebba70b7b0b296de45cb263fa850913ac8711a27
--- library/mongodb/README	(.../README)	(revision 247831dfafdb972eaf34feca38b7b67ce38c9155)
+++ library/mongodb/README	(.../README)	(revision ebba70b7b0b296de45cb263fa850913ac8711a27)
@@ -22,7 +22,7 @@
 TODO: remove the hardcoded define flag in Makefile.in
 
 In order to run the sample script, 
-  * first start the mongdb (mongod)
+  * first start the mongdb (eg. mongod)
 
   * go to your nsf source directory
 
Index: library/mongodb/nsfmongo.c
===================================================================
diff -u -N -r40086b195a1a43958f7e99ce6f66a8ab2ae6337c -rebba70b7b0b296de45cb263fa850913ac8711a27
--- library/mongodb/nsfmongo.c	(.../nsfmongo.c)	(revision 40086b195a1a43958f7e99ce6f66a8ab2ae6337c)
+++ library/mongodb/nsfmongo.c	(.../nsfmongo.c)	(revision ebba70b7b0b296de45cb263fa850913ac8711a27)
@@ -553,7 +553,7 @@
     case MONGO_CONN_NOT_MASTER: errorMsg = "not master"; break;
     case MONGO_CONN_BAD_SET_NAME: errorMsg = "replica set name doesn't match the existing replica set"; break;
     case MONGO_CONN_CANNOT_FIND_PRIMARY: errorMsg = "cannot find primary"; break;
-    default: errorMsg = "unknown Error"; break;
+    default: errorMsg = "unknown error (maybe server not running)"; break;
     }
 
     return NsfPrintError(interp, errorMsg);