Some minor updates to fix some screen refresh issues.

Cura/gui/configBase.py

@@ -84,6 +84,7 @@ class configWindowBase(wx.Frame):
 				setting.SetValue(profile.getProfileSetting(setting.configName))
 			else:
 				setting.SetValue(profile.getPreference(setting.configName))
+		self.Update()
 
 class TitleRow():
 	def __init__(self, panel, name):

Cura/gui/mainWindow.py

@@ -394,10 +394,10 @@ class mainWindow(configBase.configWindowBase):
 	
 	def OnPrint(self, e):
 		if len(self.filelist) < 1:
-			wx.MessageBox('You need to load a file and slice it before you can print it.', 'Print error', wx.OK | wx.ICON_INFORMATION)
+			wx.MessageBox('You need to load a file and prepare it before you can print it.', 'Print error', wx.OK | wx.ICON_INFORMATION)
 			return
 		if not os.path.exists(sliceRun.getExportFilename(self.filelist[0])):
-			wx.MessageBox('You need to slice the file to GCode before you can print it.', 'Print error', wx.OK | wx.ICON_INFORMATION)
+			wx.MessageBox('You need to prepare a print before you can run the actual print.', 'Print error', wx.OK | wx.ICON_INFORMATION)
 			return
 		printWindow.printFile(sliceRun.getExportFilename(self.filelist[0]))
 

Cura/gui/preview3d.py

@@ -327,6 +327,7 @@ class previewPanel(wx.Panel):
 		if self.gcode != None:
 			self.layerSpin.SetRange(1, len(self.gcode.layerList) - 1)
 		self.toolbar.Realize()
+		self.Update()
 	
 	def OnViewChange(self):
 		if self.normalViewButton.GetValue():