FAQ: Error while loading VSTA editor-addIn in Engineering Studio.
It may happen that the VSTA editor shows an error message when starting: "Error while loading the VSTA editor-addin, the VSTA editor-addin caused the crash of the Engineering Studio. There might be some errors!''
In some cases the VSTA editor still works for the 32bit Engineering Studio version, but not for the 64bit version anymore. The solution is to reinstall the ''Microsoft Visual Studio Tools for Applications''.
You can reinstall ''Microsoft Visual Studio Tools for Applications 2.0 - ENU'' from Windows Control Panel.