There is some issue with the build modes.

If build Ext.NET with "MVC5 Release" or "MVC5 Debug" modes (at least), then run Ext.Net.Examples with another mode (compatible with Ext.Net.Examples, for example, "Release" or "Debug"), there is a possibility to get this run-time exception:

Could not load file or assembly 'System.Web.WebPages.Razor...
If so, please remove manually the following dlls from Ext.Net.Examples\bin:

  • System.Web.WebPages.dll
  • System.Web.WebPages.Deployment.dll
  • System.Web.Mvc.dll

Currently, we don't see a possibility to avoid it.