我将 Visual Studio for mac 从测试版频道更新到最新的稳定频道，现在它不再启动了。 我重新安装了它，但仍然无法启动。
以下是日志的一部分：
INFO [2018-07-04 00:16:23Z]: Starting Visual Studio 2017 for Mac 7.5.3 (build 7)
INFO [2018-07-04 00:16:23Z]: Running on Mono 5.10.1.57 (2017-12/ea8a24b1bbf) (64-bit)
INFO [2018-07-04 00:16:23Z]: Operating System: Mac OS X 10.13.5
Darwin 17.6.0 Darwin Kernel Version 17.6.0
Tue May 8 15:22:16 PDT 2018
root:xnu-4570.61.1~1/RELEASE_X86_64 x86_64
INFO [2018-07-04 00:16:23Z]: GTK: Using gtkrc from /Applications/Visual Studio.app/Contents/Resources/lib/monodevelop/bin/gtkrc.mac
Could not find `Microsoft.Build.Framework` referenced by assembly `MonoDevelop.Core, Version=2.6.0.0, Culture=neutral, PublicKeyToken=3ead7498f347467b`.
...
Starting Visual Studio
FATAL ERROR [2018-07-04 00:16:30Z]: Visual Studio failed to start. Some of the assemblies required to run Visual Studio (for example gtk-sharp)may not be properly installed in the GAC.
System.InvalidOperationException: Extension node not found in path: /MonoDevelop/Core/PlatformService
at Mono.Addins.ExtensionContext.GetExtensionObjects (System.String path, System.Type arrayElementType, System.Boolean reuseCachedInstance) [0x0001c] in /Users/builder/data/lanes/5965/13cecd02/source/monodevelop/main/external/mono-addins/Mono.Addins/Mono.Addins/ExtensionContext.cs:670
at Mono.Addins.ExtensionContext.GetExtensionObjects (System.String path) [0x00000] in /Users/builder/data/lanes/5965/13cecd02/source/monodevelop/main/external/mono-addins/Mono.Addins/Mono.Addins/ExtensionContext.cs:534
at Mono.Addins.AddinManager.GetExtensionObjects (System.String path) [0x0000a] in /Users/builder/data/lanes/5965/13cecd02/source/monodevelop/main/external/mono-addins/Mono.Addins/Mono.Addins/AddinManager.cs:554
at MonoDevelop.Ide.DesktopService.Initialize () [0x00008] in /Users/builder/data/lanes/5965/13cecd02/source/monodevelop/main/src/core/MonoDevelop.Ide/MonoDevelop.Ide/DesktopService.cs:57
at MonoDevelop.Ide.IdeStartup.Run (MonoDevelop.Ide.MonoDevelopOptions options) [0x0030b] in /Users/builder/data/lanes/5965/13cecd02/source/monodevelop/main/src/core/MonoDevelop.Ide/MonoDevelop.Ide/IdeStartup.cs:178
at MonoDevelop.Ide.IdeStartup.Main (System.String[] args, MonoDevelop.Ide.Extensions.IdeCustomizer customizer) [0x0008f] in /Users/builder/data/lanes/5965/13cecd02/source/monodevelop/main/src/core/MonoDevelop.Ide/MonoDevelop.Ide/IdeStartup.cs:627
似乎我遇到了一个已知问题。这里描述了一种解决方法，它对我有用。它说要删除该文件夹：~/Library/Caches/VisualStudio/7.0/addin-db-002/