Author Archive

App.Config: Order matters

2011/09/23 1 comment

Note to self:

Within an App/Web.config in .NET… The startup node must be the last node…

Example: Create a plain WPF application from Visual Studio 2010, add an App.Config file, and try building Option 1 and Option 2 below.

Option 1:

<?xml version="1.0" encoding="utf-8" ?>
  <startup><supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/></startup>
  <configSections />

This throws: “The type initializer for ‘System.Windows.Application’ threw an exception.”

Option 2:

<?xml version="1.0" encoding="utf-8" ?>
  <configSections />
  <startup><supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/></startup>


Do I want to read 2.5MB of

C:\Program Files (x86)\Microsoft Visual Studio 10.0\Xml\Schemas\DotNetConfig.xsd

? No.

Rails and Emacs: Rsense and Auto-Complete

2011/07/17 Comments off

If you’re developing Rails with Emacs and using Rinari here are two more extensions you might like:


Installation. Just  as described. Code completion for ruby-on-rails with emacs!

And the package is written in Java(!), Very cool!

I am impressed!

Antivir regression bug makes Visual Studio 2010 unusable

2011/07/09 Comments off

The current version of Antivir Personal slows down Visual Studio 2010 making it unbearable to develop ASP.NET applications.

Debugging with active Antivir: appr. 5min for an empty Default.aspx page to display.

Debugging with deactivated Antivir: a few seconds for an empty Default.aspx page to display.

Until Antivir fixes this bug I will give Microsoft Security Essentials a try.

Regression because this has been addressed and fixed in December 2010:

Antivir FAQ (English)

Antivir FAQ (Deutsch)

This applies to the following version of Antivir:

Produktversion 29.06.2011
Suchengine 06.07.2011
Virendefinitionsdatei 07.07.2011
Control Center 28.06.2011
Config Center 28.06.2011
Luke Filewalker 28.06.2011
AntiVir Guard 28.06.2011
Filter 28.06.2011
AntiVir WebGuard 28.06.2011
Planer 02.05.2011
Updater 21.06.2011

Workaround for VirtualBox 4.0.8 regression bug

2011/05/25 Comments off

The current version of Oracle’s VirtualBox (4.0.8) has Version 4.0.8 had a regression bug which seems to only manifest itself when using Debian based hosts with 64-bit and Windows 7 64-bit guest system.

Here is the summary of the workaround posted as VirtualBox Ticket 8948:

  1. Edit the settings file to allow the VM to start again (Replace control characters in line 315 with 4.0.8).
  2. Start the Windows guest
  3. Run regedit
  4. Go to HKLM\SOFTWARE\Oracle\VirtualBox Guest Additions
  5. Create a string key VersionEx (use exactly this spelling)
  6. Give it a reasonable value (ie 4.0.8)
  7. Shut down the VM.
  8. Repeat step 1
  9. Restart and shutdown windows guest again
That’s it.
Edit: This bug has been fixed in version 4.0.10 (released 2011-06-27).
Categories: linux, software, windows Tags:

Adding Truecrypt to Ubuntu’s Unity panel

2011/05/09 Comments off

To add applications like Truecrypt to Ubuntu’s Unity panel the application has to be “white listed”.

  1. Install dconf-editor (ie sudo aptitude install dconf-editor)
  2. Go to section desktop | unity | panel and add ‘Truecrypt’ to the systray-whitelist variable
  3. Restart Unity (or log out and back in again)
Categories: linux Tags: , , , ,

NHibernate Simple Setup

2011/04/11 Comments off

My simple NHibernate 3 setup under GitHub:

Snippet for adding unknown files/dirs to Subversion (command line)

2011/03/29 Comments off
svn add `svn st | grep "^?" | awk '{print $2}'`


Categories: IT, linux Tags: , ,

Installing SQL Server Management Studio 2008 Express after installing Visual Studio 2010

2011/03/17 Comments off

Visual Studio 2010 comes with its own version of SQL Server Express.

If you try to install SSMS(E) (SQL Server Management Studio Express) afterwards and run into trouble, take a look at this post by Alexander Zeitler.

Configure VirtualBox Windows guest system to use 2 monitors

2011/01/01 Comments off


Our host system for VirtualBox is GNU/Linux. We want our guest system, windows, to use two monitors.
This solution should work for all Linux distributions supported by VirtualBox4.

Required software

  • Ubuntu 10.10 (aka Maverick) as host for VirtualBox4
  • VirtualBox 4
  • VirtualBox guest sytem: Windows XP (incl. VirtualBox guest additions)


  1. Setup virtual guest machine (windows) within vm host system (GNU/Linux) to use two monitors:


    Setting up virtualbox 4 to use 2 monitors for windows xp guest

  2. Within virtual guest (windows): Configure dual monitor setup:


    Setup within virtualbox guest system (windows)

Side note

Upgrading from VirtualBox owned by Sun to VirtualBox owned by Oracle was very smooth. Even for Linux host systems. Oracle, thanks for that!

NHibernate Code Completion (IntelliSense) for Visual Studio

2010/12/08 Comments off

Enable code completion (IntelliSense) in Visual Studio by copying the XSD files from NHibernate to your Visual Studio’s XML folder.

For example (NHibenrate 2.0.1):

Files to copy:



C:\Programme\Microsoft Visual Studio 10.0\Xml\Schemas


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