diff --git a/tren.py b/tren.py
index 587cb63..076792b 100755
--- a/tren.py
+++ b/tren.py
@@ -6,7 +6,7 @@
 # Program Information
 
 PROGNAME = "tren.py"
-RCSID = "$Id: tren.py,v 1.104 2010/01/22 20:33:06 tundra Exp $"
+RCSID = "$Id: tren.py,v 1.105 2010/01/23 00:38:55 tundra Exp $"
 VERSION = RCSID.split()[2]
 
 # Copyright Information
@@ -51,6 +51,8 @@
 # Constants
 #####
 
+MAXINCLUDES  =  50          # Maximum number of includes allowed
+
 
 #####
 # Literals
@@ -81,7 +83,8 @@
 eBADARG       =  "Invalid or malformed command line argument!"
 eBADINCL      =  "%s Option Missing Filename Specification!" % INCL
 eERROR        =  "ERROR"
-eFILEOPEN     =  "Cannot Open File '%s' Because: %s"
+eFILEOPEN     =  "Cannot Open File '%s': %s!"
+eTOOMANYINC   =  "Too Many Includes! (Max Is %d) Possible Circular Reference?" % MAXINCLUDES
 
 
 #####
@@ -282,6 +285,7 @@
 # This has to be done here separate from the command line options so
 # that getopt() processing below will "see" the included statements.
 
+NUMINCLUDES = 0
 while " ". join(OPTIONS).find(INCL) > -1:
 
     # Get the index of the next include to process.
@@ -295,6 +299,13 @@
 
     file = OPTIONS[i+1] ; lhs = OPTIONS[:i] ; rhs = OPTIONS[i+2:]
 
+    # Keep track of- and limit the number of includes allowed
+
+    NUMINCLUDES += 1
+    if NUMINCLUDES >= MAXINCLUDES:
+        ErrorMsg(eTOOMANYINC)
+        sys.exit(1)
+
     # Replace insert option on the command line with that file's contents
 
     try:
@@ -310,6 +321,7 @@
         ErrorMsg(eFILEOPEN % (file, e.args[1]))
         sys.exit(1)
 
+
 # Now process the command line options
 
 try: