diff -Naur Raster3D_2.7c/normal3d.f Raster3D_2.7c-patched/normal3d.f
--- Raster3D_2.7c/normal3d.f	2003-10-20 17:50:11.000000000 -0500
+++ Raster3D_2.7c-patched/normal3d.f	2006-04-11 01:04:15.000000000 -0500
@@ -443,7 +443,8 @@
 	READ (INPUT,'(A)',ERR=101) TITLE
 	IF (TITLE(1:1).EQ.'#') GOTO 100
 	GOTO 102
-  101	WRITE (NOISE,'(A,A)') ' >> Cannot open or read file ',TITLE(2:132)
+  101	WRITE (NOISE,'(A,A)') ' >> Cannot open or read file ',
+     * TITLE(2:132)
 	CALL EXIT(-1)
   102	CONTINUE
       ENDIF
diff -Naur Raster3D_2.7c/rastep.f Raster3D_2.7c-patched/rastep.f
--- Raster3D_2.7c/rastep.f	2004-02-12 11:01:31.000000000 -0600
+++ Raster3D_2.7c-patched/rastep.f	2006-04-11 00:55:05.000000000 -0500
@@ -133,7 +133,7 @@
 c
 c     Support for validation of similarity of bonded atoms
       logical	suvflag
-      integer	suvlun, suvbad
+      integer	suvlun, suvbad, defcols
       real	anisov(6)
 c
 c     Default to CPK colors and VDW radii
diff -Naur Raster3D_2.7c/render.f Raster3D_2.7c-patched/render.f
--- Raster3D_2.7c/render.f	2003-10-20 17:50:11.000000000 -0500
+++ Raster3D_2.7c-patched/render.f	2006-04-11 00:56:26.000000000 -0500
@@ -792,9 +792,9 @@
 *     Get background colour
       READ (INPUT,*,ERR=104) BKGND
       if (XBG.NE.0) then
-	BKGND(3) = FLOAT(iand(XBG,'00FF'X)) / 255.
-	BKGND(2) = FLOAT(iand(XBG,'FF00'X)/256) / 255.
-	BKGND(1) = FLOAT(iand(XBG,'FF0000'X)/65536) / 255.
+	BKGND(3) = REAL(iand(XBG,'00FF'X)) / 255.
+	BKGND(2) = REAL(iand(XBG,'FF00'X)/256) / 255.
+	BKGND(1) = REAL(iand(XBG,'FF0000'X)/65536) / 255.
 	BKGND(3) = BKGND(3)**2
 	BKGND(2) = BKGND(2)**2
 	BKGND(1) = BKGND(1)**2
@@ -3679,7 +3679,7 @@
 	        FRAC = DETAIL(K+8)
 	        INEXT = INDTOP + 1
   	        IF (TYPE(INEXT).EQ.VERTEXRGB) INEXT = INEXT + 1
-	        CALL ASSERT(TYPE(INEXT).EQ.VERTRANSP,'lost vertex transp')
+	    CALL ASSERT(TYPE(INEXT).EQ.VERTRANSP,'lost vertex transp')
 	        K = LIST(INEXT)
 	        CLRITY = FRAC*DETAIL(K+1) + (1.-FRAC)*DETAIL(K+2)
 	      ELSE IF (TYPE(INDTOP).EQ.TRIANG) THEN
diff -Naur Raster3D_2.7c/rings3d.f Raster3D_2.7c-patched/rings3d.f
--- Raster3D_2.7c/rings3d.f	2003-10-20 17:50:11.000000000 -0500
+++ Raster3D_2.7c-patched/rings3d.f	2006-04-11 01:03:13.000000000 -0500
@@ -16,7 +16,6 @@
 	integer input, output, noise
 	parameter (input=5, output=6, noise=0)
 	integer 	iargc, narg
-	external	iargc
 	character*64	options
 	logical		bflag, pflag, sflag
 c