Expression Blend 3 启动错误
我在 Windows 7 64 位旗舰版上全新安装了 Expression Blend 3，每次在 Expression Blend 3 中创建全新的 Silverlight 3 应用程序 + 网站项目，然后尝试运行它时，我都会收到错误：
无法启动“ http://localhost:63523/Default.html" 由于以下错误：System.ComponentModel。 Win32Exception：找不到应用程序
Blend 正在使用 Microsoft Expression Development Server，并且服务器的图标启动并显示在系统托盘中，因此我知道它正在运行。单击图标上的“显示详细信息”时，我可以看到物理路径已正确设置为项目的路径。 Default.html 文件也存在于表达式开发服务器指向的文件夹中。
I've made a fresh install of Expression Blend 3 on Windows 7 64-Bit Ultimate and every time I create a brand new Silverlight 3 Application + Website project in Expression Blend 3 then try and run it I get the error:
Could not start "http://localhost:63523/Default.html" due to the following error: System.ComponentModel.Win32Exception:Application not found
Blend is using the Microsoft Expression Development Server and the icon for the server starts and shows in the system tray so I know it's running. When clicking Show Details on the icon I can see that the physical path is set correctly to the path of the project. The Default.html file exists in the folder that the Expression Development Server is pointing too.
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我的设置与您类似（x64、Windows 7 Ultimate、Blend 3），虽然我在 Blend 方面没有遇到您的特定问题，但我遇到了其他问题（灾难性错误是常态）。
也许重新安装就能解决问题？抱歉，我知道这很陈词滥调。
I have a similar set up as you (x64, Windows 7 Ultimate, Blend 3) and while I haven't had your particular issue with Blend, I have had others (Catastrophic errors being the norm).
Maybe a reinstall will do the trick? Sorry, I know it's trite.
我发现这是由于 .url 文件类型的文件关联设置为 Microsoft 浏览器而不是 Internet Explorer/FireFox 造成的。我通过转到控制面板、默认程序、将文件类型或协议与程序关联，然后选择 .url 并导航到 Firefox.exe 可执行文件来修复此问题
I found this was caused by the file association for .url filetype was set to Microsoft Browser rather than Internet Explorer/FireFox. I fixed this by going to Control Panel, Default Programs, Associate a file type or protocol with a program, then selecting .url and navigating to the Firefox.exe executable