Fix issue MR-525 - Could not start on windows 7 64bit

CHANGELOG.TXT

@@ -1,7 +1,8 @@
 1.71:
+  Fixed issue MR-495 - Having a negative range in port scan creates memory exhaustion.
   Fixed issue MR-514 - Window Proxy test failed without close button
   Fixed issue MR-521 - Right-Clicking in "Sessions" panel crashes mRemoteNG
-  Fixed issue MR-495 - Having a negative range in port scan creates memory exhaustion.
+  Fixed issue MR-525 - Could not start on windows 7 64bit
   Made minor improvements to the port scan functionality.
 
 1.71 Beta 5 (2013-06-09):

mRemoteV1/Config/Config.Settings.Load.vb

@@ -29,7 +29,11 @@ Namespace Config
                     With Me._MainForm
                         ' Migrate settings from previous version
                         If My.Settings.DoUpgrade Then
-                            My.Settings.Upgrade()
+                            Try
+                                My.Settings.Upgrade()
+                            Catch ex As Exception
+                                Log.Error("My.Settings.Upgrade() failed" & vbNewLine & ex.Message)
+                            End Try
                             My.Settings.DoUpgrade = False
 
                             ' Clear pending update flag

mRemoteV1/Themes/ThemeManager.vb

@@ -70,6 +70,7 @@ Namespace Themes
         Private Shared _activeThemeHandlerSet As Boolean = False
         Public Shared Property ActiveTheme As ThemeInfo
             Get
+                If _activeTheme Is Nothing Then Return DefaultTheme
                 Return _activeTheme
             End Get
             Set(value As ThemeInfo)