Due to the updated SyntaxEditor add-on for integrating with Microsoft’s Oslo ‘M’ Language Definitions (formerly called MGrammar), which is now .NET 4.0-based, we had a customer run into issues installing WPF Studio because he didn’t have .NET 4.0 on his system yet.
We just added a separate option for whether to install the ‘M’ Language Definitions add-on during install. Customers who do not have .NET 4.0 installed should keep that install option disabled.
The redeploy of the WPF Studio installers is now live and should work again for those who don’t have .NET 4.0 installed, since .NET 3.5 SP1 is our target platform for all other parts of WPF Studio. If you downloaded build 523 in the last couple days, didn’t have .NET 4.0 on your system, and were unable to install, please download the updated installer that should now work for you.