--- ray/src/hd/rholo.c	1997/12/12 18:33:50	3.23
+++ ray/src/hd/rholo.c	1997/12/13 10:30:56	3.25
@@ -233,7 +233,7 @@ initrholo()			/* get our holodeck running */
 			goto memerr;
 		freepacks[--i].nr = 0;
 		freepacks[i].next = NULL;
-		if (!vbool(OBSTRUCTIONS)) {
+		if (!vdef(OBSTRUCTIONS) || !vbool(OBSTRUCTIONS)) {
 			freepacks[i].offset = (float *)bmalloc(
 					RPACKSIZ*sizeof(float)*(i+1) );
 			if (freepacks[i].offset == NULL)
@@ -337,10 +337,6 @@ register HDGRID	*gp;
 		sprintf(vval(OCTREE), "%s.oct", froot);
 		vdef(OCTREE)++;
 	}
-	if (!vdef(OBSTRUCTIONS)) {
-		vval(OBSTRUCTIONS) = "T";
-		vdef(OBSTRUCTIONS)++;
-	}
 	if (!vdef(VDIST)) {
 		vval(VDIST) = "F";
 		vdef(VDIST)++;
@@ -548,10 +544,9 @@ int	ec;
 {
 	int	status = 0;
 
-	if (hdlist[0] != NULL) {	/* flush holodeck */
+	if (hdlist[0] != NULL) {	/* close holodeck */
 		if (nprocs > 0)
-			status = done_rtrace();
-		hdflush(NULL);
+			status = done_rtrace();		/* calls hdsync() */
 		if (ncprocs > 0 && vdef(REPORT)) {
 			long	fsiz, fuse;
 			fsiz = hdfilen(hdlist[0]->fd);