diff -ur gwave-code-249-trunk.orig/src/scwm_guile.c gwave-code-249-trunk/src/scwm_guile.c
--- gwave-code-249-trunk.orig/src/scwm_guile.c	2016-08-12 16:55:04.598733712 -0600
+++ gwave-code-249-trunk/src/scwm_guile.c	2016-08-12 16:55:43.508392247 -0600
@@ -328,41 +328,6 @@
   SCM port =  scm_current_error_port();
 #endif
 
-  /* GJB:FIXME:MS: is this a guile compatibility test that can be dropped
-     now?  */
-  if (scm_ilength (throw_args) >= 3)
-    {
-      SCM fl;
-      fl = SCM_VARIABLE_REF (scm_the_last_stack_fluid_var);
-
-      /* GJB:FIXME:MS: This is a horrible hack,
-         but DEREF_LAST_STACK macro was throwing a wrong type 
-         argument at weird times, and I'm trying to avoid
-         a crash when I demo to RMS tomorrow, hence this
-         ugly hack --04/27/99 gjb */
-      if (SCM_NIMP (fl) && SCM_FLUIDP (fl)) {
-        SCM stack = DEREF_LAST_STACK;
-        SCM subr = SCM_CAR (throw_args);
-        SCM message = SCM_CADR (throw_args);
-        SCM args = SCM_CADDR (throw_args);
-        
-        scm_newline(port);
-        scm_display_backtrace (stack, port, SCM_UNDEFINED, SCM_UNDEFINED);
-        scm_newline(port);
-        scm_display_error (stack, port, subr, message, args, SCM_EOL);
-      } else {
-/*        scwm_msg(ERR,"scwm_handle_error","scm_the_last_stack_fluid not holding a fluid!"); */
-      }
-    }
-  else
-    {
-      scm_puts ("uncaught throw to ", port);
-      scm_prin1 (tag, port, 0);
-      scm_puts (": ", port);
-      scm_prin1 (throw_args, port, 1);
-      scm_putc ('\n', port);
-      exit (2);
-    }
   /* GJB:FIXME:MS: can the scheme code display a backtrace without the
      stack argument? */
   return scwm_run_hook_message_only(error_hook, scm_cons(tag, throw_args));