1.關閉Visual Studio
2.開啟資料夾%LocalAppData%\Microsoft\VisualStudio\12.0\
3.重新命名ComponentModelCache資料夾
4.重開Visual Studio
c# - No EditorOptionDefinition Export Found Error - Stack Overflow
https://stackoverflow.com/questions/23893497/no-editoroptiondefinition-export-found-error
解決VS打開文件出現No EditorOptionDefinition export found for the given option name問題 - BlinkZero的博客 - CSDN博客
https://blog.csdn.net/blinkzero/article/details/51906312