/* apply this patch (minus this line) to source/blender/blenkernel/intern/key.c */
--- key.old.c	2013-05-08 13:25:53.000000000 -0700
+++ key.c	2013-05-08 15:32:03.000000000 -0700
@@ -280,6 +280,16 @@
 		data[2] =  (fc - 2.0f) * t3  + (3.0f - 2.0f * fc) * t2 + fc * t;
 		data[3] =  fc          * t3  - fc * t2;
 	}
+	else if (type == KEY_CATMULL_ROM) {
+		t2 = t * t;
+		t3 = t2 * t;
+		fc = 0.5f;
+
+		data[0] = -fc          * t3  + 2.0f * fc          * t2 - fc * t;
+		data[1] =  (2.0f - fc) * t3  + (fc - 3.0f)        * t2 + 1.0f;
+		data[2] =  (fc - 2.0f) * t3  + (3.0f - 2.0f * fc) * t2 + fc * t;
+		data[3] =  fc          * t3  - fc * t2;
+	}
 	else if (type == KEY_BSPLINE) {
 		t2 = t * t;
 		t3 = t2 * t;
@@ -311,6 +321,15 @@
 		data[2] =  3.0f * (fc - 2.0f) * t2  + 2.0f * (3.0f - 2.0f * fc) * t  + fc;
 		data[3] =  3.0f * fc          * t2  - 2.0f * fc * t;
 	}
+	else if (type == KEY_CATMULL_ROM) {
+		t2 = t * t;
+		fc = 0.5f;
+
+		data[0] = -3.0f * fc          * t2  + 4.0f * fc * t                  - fc;
+		data[1] =  3.0f * (2.0f - fc) * t2  + 2.0f * (fc - 3.0f) * t;
+		data[2] =  3.0f * (fc - 2.0f) * t2  + 2.0f * (3.0f - 2.0f * fc) * t  + fc;
+		data[3] =  3.0f * fc          * t2  - 2.0f * fc * t;
+	}
 	else if (type == KEY_BSPLINE) {
 		t2 = t * t;
 
@@ -340,6 +359,14 @@
 		data[2] =  6.0f * (fc - 2.0f) * t  + 2.0f * (3.0f - 2.0f * fc);
 		data[3] =  6.0f * fc          * t  - 2.0f * fc;
 	}
+	else if (type == KEY_CATMULL_ROM) {
+		fc = 0.5f;
+
+		data[0] = -6.0f * fc          * t  + 4.0f * fc;
+		data[1] =  6.0f * (2.0f - fc) * t  + 2.0f * (fc - 3.0f);
+		data[2] =  6.0f * (fc - 2.0f) * t  + 2.0f * (3.0f - 2.0f * fc);
+		data[3] =  6.0f * fc          * t  - 2.0f * fc;
+	}
 	else if (type == KEY_BSPLINE) {
 		data[0] = -1.0f * t  + 1.0f;
 		data[1] =  3.0f * t  - 2.0f;