diff --git a/ChangeLog b/ChangeLog
index 6d00be633..2b30dbae1 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2009-04-22 Holger Vogt
+ * inpcom.c measure.c mystring.c alloc.c: show Windows error 
+   message before exiting
+
 2009-04-21 Dietmar Warning
  * devices/bsim4/*.c, /vbic/*.c: Parameter declaration in function header
  
diff --git a/src/frontend/inpcom.c b/src/frontend/inpcom.c
index d95e0ac28..5fd6457ac 100644
--- a/src/frontend/inpcom.c
+++ b/src/frontend/inpcom.c
@@ -1371,6 +1371,7 @@ inp_readall(FILE *fp, struct line **data, int call_depth, char *dir_name)
             if ( ciprefix(".lib", buffer) ) {
                if ( found_lib_name == TRUE ) {
                   fprintf( stderr, "ERROR: .lib is missing .endl!\n" );
+                  winmessage("Fatal error in SPICE");
                   exit(-1);
                }
 
@@ -2475,6 +2476,7 @@ inp_expand_macro_in_str( char *str )
 	  }
 	  if ( close_paren_ptr == NULL ) {
 	    fprintf( stderr, "ERROR: did not find closing parenthesis for function call in str: %s\n", orig_str );
+	    winmessage("Fatal error in SPICE");
 	    exit( -1 );
 	  }
 	  *close_paren_ptr = '\0';
@@ -2502,6 +2504,7 @@ inp_expand_macro_in_str( char *str )
 	  
 	  if ( num_parameters[i] != num_params ) {
 	    fprintf( stderr, "ERROR: parameter mismatch for function call in str: %s\n", orig_ptr );
+	    winmessage("Fatal error in SPICE");
 	    exit( -1 );
 	  }
 
@@ -2818,6 +2821,7 @@ get_param_name( char *line )
   else
     {
       fprintf( stderr, "ERROR: could not find '=' on parameter line '%s'!\n", line );
+      winmessage("Fatal error in SPICE");
       exit(-1);
     }
   return name;
@@ -2853,6 +2857,7 @@ inp_get_param_level( int param_num, char ***depends_on, char **param_names, char
       if ( index2 > total_params )
 	{
 	  fprintf( stderr, "ERROR: unable to find dependency parameter for %s!\n", param_names[param_num] );
+	  winmessage("Fatal error in SPICE");
 	  exit( -1 );
 	}
       temp_level = inp_get_param_level( index2, depends_on, param_names, param_strs, total_params, level );
@@ -3132,6 +3137,7 @@ inp_sort_params( struct line *start_card, struct line *end_card, struct line *ca
   if ( ind != num_params )
     {
       fprintf( stderr, "ERROR: found wrong number of parameters during levelization ( %d instead of %d parameter s)!\n", ind, num_params );
+      winmessage("Fatal error in SPICE");
       exit(-1);
     }
 
diff --git a/src/frontend/measure.c b/src/frontend/measure.c
index 9a1732e96..19b035fba 100644
--- a/src/frontend/measure.c
+++ b/src/frontend/measure.c
@@ -591,6 +591,7 @@ do_measure( char *what, bool chk_only ) {
     // see if number of measurements exceeds fixed array size of 20,000
     if ( index >= 20000 ) {
       fprintf( stderr, "ERROR: number of measurements exceeds 20,000!\nAborting...\n" );
+      winmessage("Fatal error in SPICE");
       exit(-1);
     }
   }
diff --git a/src/frontend/numparam/mystring.c b/src/frontend/numparam/mystring.c
index 37a9c2163..f0f5448d5 100644
--- a/src/frontend/numparam/mystring.c
+++ b/src/frontend/numparam/mystring.c
@@ -73,7 +73,7 @@ rs (char *s)
 {				/*basic line input, limit= 80 chars */
   int max, i;
   char c;
-  exit (-1);
+/*  exit (-1); */
   max = maxlen (s);
   i = 0;
   sini (s, max);
@@ -137,6 +137,7 @@ stringbug (char *op, char *s, char *t, char c)
     fprintf (stderr, "{%c}\n", c);
 
   fprintf (stderr, "Aborting...\n");
+  winmessage("Fatal error in SPICE");
   exit (1);
 
 /* The code below cannot be reached */
@@ -770,6 +771,7 @@ new (long sz)
       if (p == NULL)
 	{			/* fatal error */
 	  ws (" new() failure. Program halted.\n");
+	  winmessage("Fatal error in SPICE");
 	  exit (1);
 	}
       return p;
diff --git a/src/misc/alloc.c b/src/misc/alloc.c
index 9d482810a..1d26b119c 100644
--- a/src/misc/alloc.c
+++ b/src/misc/alloc.c
@@ -51,6 +51,7 @@ tmalloc(size_t num)
 #endif
     if (!s){
       fprintf(stderr,"malloc: Internal Error: can't allocate %ld bytes. \n",(long)num);
+      winmessage("Fatal error in SPICE");
       exit(EXIT_BAD);
     }
     return(s);
@@ -134,6 +135,7 @@ trealloc(void *ptr, size_t num)
   }
   if (!s) {
     fprintf(stderr,"realloc: Internal Error: can't allocate %ld bytes.\n", (long)num);
+    winmessage("Fatal error in SPICE");
     exit(EXIT_BAD);
   }
   return(s);
@@ -175,6 +177,7 @@ hrealloc(void *ptr, size_t num)
   }
   if (!s) {
     fprintf(stderr,"HeapReAlloc: Internal Error: can't allocate %ld bytes.\n", (long)num);
+    winmessage("Fatal error in SPICE");
     exit(EXIT_BAD);
   }
   return(s);