--- ray/src/util/do_file.tcl	1994/12/08 15:53:46	2.4
+++ ray/src/util/do_file.tcl	1995/03/21 16:19:26	2.7
@@ -167,7 +167,7 @@ proc load_vars {f {vl all}} {	# load RIF variables
 		set curmess {Project loaded.}
 	} else {
 		foreach n $vl {
-			set radvar($n) {}
+			catch {unset radvar($n)}
 		}
 		while {[gets $fi curli] != -1} {
 			if [regexp {^[a-zA-Z][a-zA-Z0-9]* *=} $curli] {
@@ -241,6 +241,11 @@ proc newsave f {		# save a RIF
 				questhead 1 {Go Ahead} {Cancel}] {
 			return 0
 		}
+	}
+	if {[file exists $f] && ! [file writable $f] && 
+			[catch {exec chmod u+w $f} curmess]} {
+		beep
+		return 0
 	}
 	if [save_vars $f] {
 		set rifname [pwd]/$f