diff --git a/pkgs/base/info.rkt b/pkgs/base/info.rkt
index 0852eb6f00..178439f3a7 100644
--- a/pkgs/base/info.rkt
+++ b/pkgs/base/info.rkt
@@ -12,7 +12,7 @@
 
 (define collection 'multi)
 
-(define version "7.2.0.2")
+(define version "7.2.0.3")
 
 (define deps `("racket-lib"
                ["racket" #:version ,version]))
diff --git a/racket/src/cs/rumble/box.ss b/racket/src/cs/rumble/box.ss
index 6c2bfe499f..8a0f14b6bb 100644
--- a/racket/src/cs/rumble/box.ss
+++ b/racket/src/cs/rumble/box.ss
@@ -23,8 +23,17 @@
   ;; must handle impersonators
   (unbox b))
 
-(define (unbox* b)
-  (#2%unbox b))
+(define/who (unbox* b)
+  (if (#%box? b)
+      (#3%unbox b)
+      (bad-box*-op who #f b)))
+
+(define (bad-box*-op who set? b)
+  (raise-argument-error who
+                        (if set?
+                            "(and/c box? (not immutable?) (not impersonator?))"
+                            "(and/c box? (not impersonator?))")
+                        b))
 
 (define (set-box! b v)
   (if (#%mutable-box? b)
@@ -35,8 +44,10 @@
   ;; must handle impersonators
   (set-box! b v))
 
-(define (set-box*! b v)
-  (#2%set-box! b v))
+(define/who (set-box*! b v)
+  (if (#%mutable-box? b)
+      (#3%set-box! b v)
+      (bad-box*-op who #t b)))
 
 ;; in schemified:
 (define (unbox/check-undefined b name)
diff --git a/racket/src/cs/rumble/vector.ss b/racket/src/cs/rumble/vector.ss
index 338b70ebb5..7f2f3c87bc 100644
--- a/racket/src/cs/rumble/vector.ss
+++ b/racket/src/cs/rumble/vector.ss
@@ -148,7 +148,12 @@
   (vector-length vec))
 
 (define (vector*-length vec)
-  (#2%vector-length vec))
+  (if (#%vector? vec)
+      (#3%vector-length vec)
+      (bad-vector*-for-length vec)))
+
+(define (bad-vector*-for-length vec)
+  (raise-argument-error 'vector*-length "(and/c vector? (not impersonator?))" vec))
 
 (define (impersonate-vector-length vec)
   (if (and (impersonator? vec)
@@ -176,7 +181,20 @@
       (pariah (impersonate-vector-ref vec idx))))
 
 (define/who (vector*-ref vec idx)
-  (#2%vector-ref vec idx))
+  (if (#%$vector-ref-check? vec idx)
+      (#3%vector-ref vec idx)
+      (bad-vector*-op who #f vec idx)))
+
+(define (bad-vector*-op who set? vec idx)
+  (cond
+   [set?
+    (unless (#%mutable-vector? vec)
+      (raise-argument-error who "(and/c vector? (not immutable?) (not impersonator?))" vec))]
+   [else
+    (unless (#%vector? vec)
+      (raise-argument-error who "(and/c vector? (not impersonator?))" vec))])
+  (check who exact-nonnegative-integer? idx)
+  (check-range who "vector" vec idx #f (fx- (#%vector-length vec) 1)))
 
 (define (impersonate-vector-ref orig idx)
   (if (and (impersonator? orig)
@@ -222,8 +240,10 @@
       (#3%vector-set! vec idx val)
       (pariah (impersonate-vector-set! vec idx val))))
 
-(define (vector*-set! vec idx val)
-  (#2%vector-set! vec idx val))
+(define/who (vector*-set! vec idx val)
+  (if (#%$vector-set!-check? vec idx)
+      (#3%vector-set! vec idx val)
+      (bad-vector*-op who #t vec idx)))
 
 (define (impersonate-vector-set! orig idx val)
   (cond
diff --git a/racket/src/racket/src/schvers.h b/racket/src/racket/src/schvers.h
index 6d931ea8a1..b2f02b0cd1 100644
--- a/racket/src/racket/src/schvers.h
+++ b/racket/src/racket/src/schvers.h
@@ -13,12 +13,12 @@
    consistently.)
 */
 
-#define MZSCHEME_VERSION "7.2.0.2"
+#define MZSCHEME_VERSION "7.2.0.3"
 
 #define MZSCHEME_VERSION_X 7
 #define MZSCHEME_VERSION_Y 2
 #define MZSCHEME_VERSION_Z 0
-#define MZSCHEME_VERSION_W 2
+#define MZSCHEME_VERSION_W 3
 
 #define MZSCHEME_VERSION_MAJOR ((MZSCHEME_VERSION_X * 100) + MZSCHEME_VERSION_Y)
 #define MZSCHEME_VERSION_MINOR ((MZSCHEME_VERSION_Z * 1000) + MZSCHEME_VERSION_W)