diff --git a/ChangeLog b/ChangeLog
index 304522c..fdd87df 100755
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2006-10-09 (0.3-5) Jun Yan  <jyan@.stat.uiowa.edu>
+
+	* changed check '(is.null(bugs))' to '(length(bugs) == 0)' in rbugs,
+	as pointed out by Simon Bonner <sbonner@stat.sfu.ca>.
+
 2006-03-28 (0.3-4) Jun Yan  <jyan@stat.uiowa.edu>
 
 	* added random number seed as an option to rbugs and 
diff --git a/DESCRIPTION b/DESCRIPTION
index 56d05c5..ffe568b 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,7 +1,7 @@
 Package: rbugs
 Title: Fusing R and OpenBugs
-Date: 2006-03-28
-Version: 0.3-4
+Date: 2006-10-10
+Version: 0.3-5
 Author: Jun Yan <jyan@stat.uiowa.edu> 
  (with part of the code modified from bugs.R,
   http://www.stat.columbia.edu/~gelman/bugsR/,
@@ -11,4 +11,4 @@ Description: Functions to prepare files needed for running BUGS
  with OpenBugs is emphasized. 
 Maintainer: Jun Yan <jyan@stat.uiowa.edu>
 License: GPL 2.0 or later
-Packaged: Tue Mar 28 12:45:07 2006; jyan
+Packaged: Mon Oct  9 22:38:08 2006; jyan
diff --git a/R/rbugs.R b/R/rbugs.R
index a2daeec..c352297 100644
--- a/R/rbugs.R
+++ b/R/rbugs.R
@@ -45,7 +45,7 @@ rbugs <- function(data, inits, paramSet, model,
       ## how to check the existence of WinBUGS???
     }
     else { ## use linbugs!
-      if (is.null(bugs)) bugs <- system("which linbugs", TRUE)
+      if (length(bugs) == 0) bugs <- system("which linbugs", TRUE)
       if (length(bugs) == 0)
         stop(paste("BUGS executable", bugs, "does not exists."))
     }
diff --git a/inst/docs/rbugs.pdf b/inst/docs/rnews_rbugs.pdf
similarity index 100%
rename from inst/docs/rbugs.pdf
rename to inst/docs/rnews_rbugs.pdf