diff --git a/Cura/cura_sf/skeinforge_application/skeinforge_plugins/craft_plugins/export_plugins/static_plugins/gcode_small.py b/Cura/cura_sf/skeinforge_application/skeinforge_plugins/craft_plugins/export_plugins/static_plugins/gcode_small.py
index 8837e377..00e25540 100644
--- a/Cura/cura_sf/skeinforge_application/skeinforge_plugins/craft_plugins/export_plugins/static_plugins/gcode_small.py
+++ b/Cura/cura_sf/skeinforge_application/skeinforge_plugins/craft_plugins/export_plugins/static_plugins/gcode_small.py
@@ -126,6 +126,8 @@ class GcodeSmallSkein:
 			self.output.write(';TYPE:FILL\n');
 		elif line.startswith('(<alteration>'):
 			self.output.write(';TYPE:CUSTOM\n');
+		elif line.startswith('(<supportLayer>'):
+			self.output.write(';TYPE:SUPPORT\n');
 		elif line.startswith('(<layer>'):
 			self.output.write(';LAYER:%d\n' % (self.layerNr));
 			self.layerNr += 1
diff --git a/Cura/gui/machineCom.py b/Cura/gui/machineCom.py
index ffd81653..7c1de22f 100644
--- a/Cura/gui/machineCom.py
+++ b/Cura/gui/machineCom.py
@@ -103,6 +103,30 @@ class InstallFirmware(wx.Dialog):
 	def OnClose(self, e):
 		self.Destroy()
 
+class VirtualPrinter():
+	def __init__(self):
+		self.readList = ['start\n']
+	
+	def write(self, data):
+		if self.readList == None:
+			return
+		print "Send: %s" % (data.rstrip())
+		self.readList.append("ok\n")
+
+	def readline(self):
+		if self.readList == None:
+			return ''
+		while len(self.readList) < 1:
+			time.sleep(0.1)
+			if self.readList == None:
+				return ''
+		time.sleep(0.001)
+		print "Recv: %s" % (self.readList[0].rstrip())
+		return self.readList.pop(0)
+	
+	def close(self):
+		self.readList = None
+
 class MachineCom():
 	def __init__(self, port = None, baudrate = None):
 		if port == None:
@@ -124,6 +148,8 @@ class MachineCom():
 				except:
 					print "Unexpected error while connecting to serial port:" + port, sys.exc_info()[0]
 			programmer.close()
+		elif port == 'VIRTUAL':
+			self.serial = VirtualPrinter()
 		else:
 			try:
 				self.serial = Serial(port, baudrate, timeout=5)
@@ -134,8 +160,8 @@ class MachineCom():
 		if self.serial == None:
 			return None
 		ret = self.serial.readline()
-		if ret != '':
-			print "Recv: " + ret.rstrip()
+		#if ret != '':
+		#	print "Recv: " + ret.rstrip()
 		return ret
 	
 	def close(self):
@@ -146,6 +172,6 @@ class MachineCom():
 	def sendCommand(self, cmd):
 		if self.serial == None:
 			return
-		print 'Send: ' + cmd
+		#print 'Send: ' + cmd
 		self.serial.write(cmd + '\n')
 
diff --git a/Cura/gui/mainWindow.py b/Cura/gui/mainWindow.py
index 20a00324..870e02df 100644
--- a/Cura/gui/mainWindow.py
+++ b/Cura/gui/mainWindow.py
@@ -36,7 +36,7 @@ class mainWindow(configBase.configWindowBase):
 		super(mainWindow, self).__init__(title='Cura')
 		
 		wx.EVT_CLOSE(self, self.OnClose)
-		self.SetIcon(icon.getMainIcon())
+		#self.SetIcon(icon.getMainIcon())
 		
 		menubar = wx.MenuBar()
 		fileMenu = wx.Menu()
diff --git a/Cura/gui/preferencesDialog.py b/Cura/gui/preferencesDialog.py
index 564a583c..782ee338 100644
--- a/Cura/gui/preferencesDialog.py
+++ b/Cura/gui/preferencesDialog.py
@@ -25,6 +25,10 @@ class preferencesDialog(configBase.configWindowBase):
 		c = configBase.SettingRow(left, 'Machine height (mm)', 'machine_height', '200', 'Size of the machine in mm', type = 'preference')
 		validators.validFloat(c, 10.0)
 
+		configBase.TitleRow(left, 'Filament settings')
+		c = configBase.SettingRow(left, 'Filament density (kg/m3)', 'filament_density', '1300', 'Weight of the filament per m3. Around 1300 for PLA. And around 1040 for ABS. This value is used to estimate the weight if the filament used for the print.', type = 'preference')
+		validators.validFloat(c, 500.0, 3000.0)
+		
 		configBase.TitleRow(left, 'Communication settings')
 		c = configBase.SettingRow(left, 'Serial port', 'serial_port', ['AUTO'] + machineCom.serialList(), 'Serial port to use for communication with the printer', type = 'preference')
 		c = configBase.SettingRow(left, 'Baudrate', 'serial_baud', '250000', 'Speed of the serial port communication\nNeeds to match your firmware settings\nCommon values are 250000, 115200, 57600', type = 'preference')
diff --git a/Cura/gui/preview3d.py b/Cura/gui/preview3d.py
index c27558bd..935cef7b 100644
--- a/Cura/gui/preview3d.py
+++ b/Cura/gui/preview3d.py
@@ -459,6 +459,10 @@ class PreviewGLCanvas(glcanvas.GLCanvas):
 								glColor3f(c/2,c/2,0)
 							elif path.pathType == 'WALL-INNER':
 								glColor3f(0,c,0)
+							elif path.pathType == 'SUPPORT':
+								glColor3f(0,c,c)
+							elif path.pathType == 'SKIRT':
+								glColor3f(0,c/2,c/2)
 							else:
 								glColor3f(c,0,0)
 						if path.type == 'retract':
diff --git a/Cura/gui/printWindow.py b/Cura/gui/printWindow.py
index 7eae41fd..ac424290 100644
--- a/Cura/gui/printWindow.py
+++ b/Cura/gui/printWindow.py
@@ -13,6 +13,7 @@ def printFile(filename):
 	global printWindowHandle
 	if printWindowHandle == None:
 		printWindowHandle = printWindow()
+		printWindowHandle.OnConnect(None)
 	printWindowHandle.Show(True)
 	printWindowHandle.Raise()
 	printWindowHandle.LoadGCodeFile(filename)
@@ -24,12 +25,13 @@ class printWindow(wx.Frame):
 		self.machineCom = None
 		self.machineConnected = False
 		self.thread = None
+		self.gcode = None
 		self.gcodeList = None
 		self.printIdx = None
 		self.bufferLineCount = 4
 		self.sendCnt = 0
 
-		self.SetIcon(icon.getMainIcon())
+		#self.SetIcon(icon.getMainIcon())
 		
 		self.SetSizer(wx.BoxSizer())
 		self.panel = wx.Panel(self)
@@ -39,18 +41,18 @@ class printWindow(wx.Frame):
 		
 		sb = wx.StaticBox(self.panel, label="Statistics")
 		boxsizer = wx.StaticBoxSizer(sb, wx.VERTICAL)
-		self.statsText = wx.StaticText(self.panel, -1, "Filament: #.##m #.##g\nPrint time: ##:##")
+		self.statsText = wx.StaticText(self.panel, -1, "Filament: ####.##m #.##g\nPrint time: #####:##")
 		boxsizer.Add(self.statsText, flag=wx.LEFT, border=5)
 		
 		self.sizer.Add(boxsizer, pos=(0,0), span=(4,1), flag=wx.EXPAND)
 		
 		self.connectButton = wx.Button(self.panel, -1, 'Connect')
-		self.loadButton = wx.Button(self.panel, -1, 'Load GCode')
+		#self.loadButton = wx.Button(self.panel, -1, 'Load GCode')
 		self.printButton = wx.Button(self.panel, -1, 'Print GCode')
 		self.cancelButton = wx.Button(self.panel, -1, 'Cancel print')
 		self.progress = wx.Gauge(self.panel, -1)
 		self.sizer.Add(self.connectButton, pos=(0,1))
-		self.sizer.Add(self.loadButton, pos=(1,1))
+		#self.sizer.Add(self.loadButton, pos=(1,1))
 		self.sizer.Add(self.printButton, pos=(2,1))
 		self.sizer.Add(self.cancelButton, pos=(3,1))
 		self.sizer.Add(self.progress, pos=(4,0), span=(1,2), flag=wx.EXPAND)
@@ -59,7 +61,7 @@ class printWindow(wx.Frame):
 		
 		self.Bind(wx.EVT_CLOSE, self.OnClose)
 		self.connectButton.Bind(wx.EVT_BUTTON, self.OnConnect)
-		self.loadButton.Bind(wx.EVT_BUTTON, self.OnLoad)
+		#self.loadButton.Bind(wx.EVT_BUTTON, self.OnLoad)
 		self.printButton.Bind(wx.EVT_BUTTON, self.OnPrint)
 		self.cancelButton.Bind(wx.EVT_BUTTON, self.OnCancel)
 		
@@ -72,14 +74,19 @@ class printWindow(wx.Frame):
 	
 	def UpdateButtonStates(self):
 		self.connectButton.Enable(not self.machineConnected)
-		self.loadButton.Enable(self.printIdx == None)
+		#self.loadButton.Enable(self.printIdx == None)
 		self.printButton.Enable(self.machineConnected and self.gcodeList != None and self.printIdx == None)
 		self.cancelButton.Enable(self.printIdx != None)
 	
 	def UpdateProgress(self):
 		status = ""
+		if self.gcode != None:
+			status += "Filament: %.2fm %.2fg\n" % (self.gcode.extrusionAmount / 1000, self.gcode.calculateWeight() * 1000)
+			status += "Print time: %02d:%02d\n" % (int(self.gcode.totalMoveTimeMinute / 60), int(self.gcode.totalMoveTimeMinute % 60))
 		if self.printIdx == None:
 			self.progress.SetValue(0)
+			if self.gcodeList != None:
+				status += 'Line: -/%d\n' % (len(self.gcodeList))
 		else:
 			self.progress.SetValue(self.printIdx)
 			status += 'Line: %d/%d\n' % (self.printIdx, len(self.gcodeList))
@@ -122,6 +129,8 @@ class printWindow(wx.Frame):
 		self.Destroy()
 
 	def LoadGCodeFile(self, filename):
+		if self.printIdx != None:
+			return
 		gcodeList = ["M110"]
 		for line in open(filename, 'r'):
 			if ';' in line:
@@ -131,19 +140,19 @@ class printWindow(wx.Frame):
 				gcodeList.append(line)
 		gcode = gcodeInterpreter.gcode()
 		gcode.loadList(gcodeList)
-		print gcode.extrusionAmount
-		print gcode.totalMoveTimeMinute
 		print "Loaded: %s (%d)" % (filename, len(gcodeList))
 		self.progress.SetRange(len(gcodeList))
+		self.gcode = gcode
 		self.gcodeList = gcodeList
 		self.UpdateButtonStates()
 		self.UpdateProgress()
 
 	def sendLine(self, lineNr):
 		if lineNr >= len(self.gcodeList):
-			return
+			return False
 		checksum = reduce(lambda x,y:x^y, map(ord, "N%d%s" % (lineNr, self.gcodeList[lineNr])))
 		self.machineCom.sendCommand("N%d%s*%d" % (lineNr, self.gcodeList[lineNr], checksum))
+		return True
 
 	def PrinterMonitor(self):
 		skipCount = 0
@@ -151,7 +160,7 @@ class printWindow(wx.Frame):
 			line = self.machineCom.readline()
 			if line == None:
 				self.machineConnected = False
-				wx.CallAfter(self.UpdateButtonState)
+				wx.CallAfter(self.UpdateButtonStates)
 				return
 			if self.machineConnected:
 				while self.sendCnt > 0:
@@ -160,14 +169,17 @@ class printWindow(wx.Frame):
 					self.sendCnt -= 1
 			elif line.startswith("start"):
 				self.machineConnected = True
-				wx.CallAfter(self.UpdateButtonState)
+				wx.CallAfter(self.UpdateButtonStates)
 			if self.printIdx != None:
 				if line.startswith("ok"):
 					if skipCount > 0:
 						skipCount -= 1
 					else:
-						self.sendLine(self.printIdx)
-						self.printIdx += 1
+						if self.sendLine(self.printIdx):
+							self.printIdx += 1
+						else:
+							self.printIdx = None
+							wx.CallAfter(self.UpdateButtonStates)
 						wx.CallAfter(self.UpdateProgress)
 				elif "resend" in line.lower() or "rs" in line:
 					try:
@@ -177,3 +189,4 @@ class printWindow(wx.Frame):
 							lineNr=int(line.split()[1])
 					self.printIdx = lineNr
 					#we should actually resend the line here, but we also get an "ok" for each error from Marlin. And thus we'll resend on the OK.
+
diff --git a/Cura/gui/simpleMode.py b/Cura/gui/simpleMode.py
index 13954fd1..1b498be7 100644
--- a/Cura/gui/simpleMode.py
+++ b/Cura/gui/simpleMode.py
@@ -20,7 +20,7 @@ class simpleModeWindow(configBase.configWindowBase):
 		super(simpleModeWindow, self).__init__(title='Cura - Simple mode')
 		
 		wx.EVT_CLOSE(self, self.OnClose)
-		self.SetIcon(icon.getMainIcon())
+		#self.SetIcon(icon.getMainIcon())
 		
 		menubar = wx.MenuBar()
 		fileMenu = wx.Menu()
diff --git a/Cura/util/gcodeInterpreter.py b/Cura/util/gcodeInterpreter.py
index 06ebd5ac..3570d49e 100644
--- a/Cura/util/gcodeInterpreter.py
+++ b/Cura/util/gcodeInterpreter.py
@@ -7,6 +7,7 @@ import re
 import os
 
 from util import util3d
+from util import profile
 
 class gcodePath():
 	def __init__(self, newType, pathType, startPoint):
@@ -31,6 +32,12 @@ class gcode():
 	def loadList(self, l):
 		self._load(l)
 	
+	def calculateWeight(self):
+		#Calculates the weight of the filament in kg
+		radius = float(profile.getProfileSetting('filament_diameter')) / 2
+		volumeM3 = (self.extrusionAmount * (math.pi * radius * radius)) / (1000*1000*1000)
+		return volumeM3 * float(profile.getPreference('filament_density'))
+	
 	def _load(self, gcodeFile):
 		filePos = 0
 		pos = util3d.Vector3()
diff --git a/Cura/util/profile.py b/Cura/util/profile.py
index 2548ec81..5845e14c 100644
--- a/Cura/util/profile.py
+++ b/Cura/util/profile.py
@@ -69,6 +69,7 @@ preferencesDefaultSettings = {
 	'machine_width': '205',
 	'machine_depth': '205',
 	'machine_height': '200',
+	'filament_density': '1300',
 	'steps_per_e': '0',
 	'serial_port': 'AUTO',
 	'serial_baud': '250000',
diff --git a/package.sh b/package.sh
index 7eaed804..2a9038ae 100755
--- a/package.sh
+++ b/package.sh
@@ -16,7 +16,7 @@ BUILD_TARGET=${1:-win32}
 ##Do we need to create the final archive
 ARCHIVE_FOR_DISTRIBUTION=1
 ##Which version name are we appending to the final archive
-BUILD_NAME=NewUI-Beta4
+BUILD_NAME=RC1
 TARGET_DIR=${BUILD_TARGET}-Cura-${BUILD_NAME}
 
 ##Which versions of external programs to use
@@ -159,6 +159,12 @@ if (( ${ARCHIVE_FOR_DISTRIBUTION} )); then
 		cd ${TARGET_DIR}
 		7z a ../${TARGET_DIR}.zip *
 		cd ..
+		
+		if [ ! -z `which wine` ]; then
+			#if we have wine, try to run our nsis script.
+			ln -sf `pwd`/${TARGET_DIR} scripts/win32/dist
+			wine ~/.wine/drive_c/Program\ Files/NSIS/makensis.exe /DVERSION=${BUILD_NAME} scripts/win32/installer.nsi 
+		fi
 	else
 		echo "Archiving to ${TARGET_DIR}.tar.gz"
 		$TAR cfp - ${TARGET_DIR} | gzip --best -c > ${TARGET_DIR}.tar.gz
diff --git a/scripts/win32/installer.nsi b/scripts/win32/installer.nsi
index 590deabb..c5d36f5b 100644
--- a/scripts/win32/installer.nsi
+++ b/scripts/win32/installer.nsi
@@ -1,4 +1,6 @@
-!define VERSION 'RC1'
+!ifndef VERSION
+  !define VERSION 'DEV'
+!endif
 
 ; The name of the installer
 Name "Cura ${VERSION}"