diff --git a/release/scripts/DirectX8Exporter.py b/release/scripts/DirectX8Exporter.py
index 01212545f77..b8bdae4de2b 100644
--- a/release/scripts/DirectX8Exporter.py
+++ b/release/scripts/DirectX8Exporter.py
@@ -7,7 +7,7 @@
 # Tooltip: 'Export to DirectX text file format format for XNA Animation Component Library.'
 """
 __author__ = "vertex color exporting feature is added by mnemoto (original:minahito (original:Arben (Ben) Omari))"
-__url__ = ("blender", "elysiun", "Adjuster's site http://sunday-lab.blogspot.com/, Author's site http://www.omariben.too.it","Adjuster's site http://ex.homeunix.net/")
+__url__ = ("blender.org", "blenderartists.org", "Adjuster's site http://sunday-lab.blogspot.com/, Author's site http://www.omariben.too.it","Adjuster's site http://ex.homeunix.net/")
 __version__ = "3.1"
 
 __bpydoc__ = """\
diff --git a/release/scripts/uvcalc_lightmap.py b/release/scripts/uvcalc_lightmap.py
index 37423b7197e..1433ccbd13a 100644
--- a/release/scripts/uvcalc_lightmap.py
+++ b/release/scripts/uvcalc_lightmap.py
@@ -47,6 +47,12 @@ def AngleBetweenVecs(a1,a2):
 	except:
 		return 180.0
 
+# python 2.3 has no reversed() iterator. this will only work on lists and tuples
+try:
+	reversed
+except:
+	def reversed(l): return l[::-1]
+
 class prettyface(object):
 	__slots__ = 'uv', 'width', 'height', 'children', 'xoff', 'yoff', 'has_parent', 'rot'
 	def __init__(self, data):
@@ -451,7 +457,10 @@ PREF_MARGIN_DIV=		512):
 			# Even boxes in groups of 4
 			for d, boxes in even_dict.items():	
 				if d < max_int_dimension:
-					boxes.sort(key = lambda a: len(a.children))
+					# py 2.3 compat
+					try:	boxes.sort(key = lambda a: len(a.children))
+					except:	boxes.sort(lambda a, b: cmp(len(a.children), len(b.children)))
+					
 					while len(boxes) >= 4:
 						# print "bar", len(boxes)
 						ok = True
diff --git a/release/scripts/wizard_curve2tree.py b/release/scripts/wizard_curve2tree.py
index 84b2cc76132..1965f9a5070 100644
--- a/release/scripts/wizard_curve2tree.py
+++ b/release/scripts/wizard_curve2tree.py
@@ -61,6 +61,12 @@ def AngleBetweenVecsSafe(a1, a2):
 	except:
 		return 180.0
 
+# Python 2.3 has no reversed.
+try:
+	reversed
+except:
+	def reversed(l): return l[::-1]
+
 # Copied from blender, we could wrap this! - BKE_curve.c
 # But probably not toooo bad in python
 def forward_diff_bezier(q0, q1, q2, q3, pointlist, steps, axis):
@@ -268,7 +274,7 @@ class tree:
 		# Sort from big to small, so big branches get priority
 		# Py 2.3 dosnt have keywords in sort
 		try:	self.branches_all.sort( key = lambda brch: -brch.bpoints[0].radius )
-		except: self.branches_all.sort( lambda brch_a, brch_b: cmp(brch_b.bpoints[0].radius, brch_a.bpoints[0].radius) )
+		except: self.branches_all.sort( lambda brch_a, brch_b: cmp(brch_b.bpoints[0].radius, brch_a.bpoints[0].radius) ) # py2.3
 	
 	
 	def closestBranchPt(self, co):
@@ -1146,7 +1152,8 @@ class tree:
 				
 				# Try sorting by other properties! this is ok for now
 				for segments_level_current in segments_level:
-					segments_level_current.sort( key = lambda seg:	-(seg.headCo-seg.tailCo).length )
+					try:	segments_level_current.sort( key = lambda seg:	-(seg.headCo-seg.tailCo).length )
+					except:	segments_level_current.sort( lambda a,b: cmp((b.headCo-b.tailCo).length, (a.headCo-a.tailCo).length) ) # py2.3
 				
 				for level in xrange(twig_fill_levels):
 					if len(segments_level) > level:
@@ -1372,18 +1379,23 @@ class tree:
 		
 		# Get the branches based on our selection method!
 		if twig_select_mode==0:
-			branches_sorted.sort( key = lambda brch: brch.getLength())
+			try:	branches_sorted.sort( key = lambda brch: brch.getLength())
+			except:	branches_sorted.sort( lambda a,b: cmp(a.getLength(),a.getLength()) ) # py2.3
 		elif twig_select_mode==1:
-			branches_sorted.sort( key = lambda brch:-brch.getLength())
+			try:	branches_sorted.sort( key = lambda brch:-brch.getLength())
+			except:	branches_sorted.sort( lambda a,b: cmp(b.getLength(), a.getLength()) ) # py2.3
 		elif twig_select_mode==2:
-			branches_sorted.sort( key = lambda brch:brch.getStraightness())
+			try:	branches_sorted.sort( key = lambda brch:brch.getStraightness())
+			except:	branches_sorted.sort( lambda a,b: cmp(a.getStraightness(), b.getStraightness())) # py2.3
 		elif twig_select_mode==3:
-			branches_sorted.sort( key = lambda brch:-brch.getStraightness())
+			try:	branches_sorted.sort( key = lambda brch:-brch.getStraightness())
+			except:	branches_sorted.sort( lambda a,b: cmp(b.getStraightness(), a.getStraightness())) # py2.3
 		
 		factor_int = int(len(self.branches_all) * twig_select_factor)
 		branches_sorted[factor_int:] = []  # remove the last part of the list
 		
-		branches_sorted.sort( key = lambda brch: len(brch.bpoints))
+		try:	branches_sorted.sort( key = lambda brch: len(brch.bpoints))
+		except:	branches_sorted.sort( lambda a,b: cmp(len(a.bpoints), len(b.bpoints)) ) # py2.3
 		
 		branches_new = []
 		#for i in xrange(ratio_int):