将应用程序升级到WP8，在启动时崩溃 [英] Upgrading app to WP8, crashes at launch

问题描述

我已将Windows Phone 7应用升级到Windows Phone 8，现在它无法运行。它会抛出一个RootFrame_NavigationFailed，并在"/LaunchPage.xaml"位置找到没有XAML的消息。

I have upgraded a Windows Phone 7 app to Windows Phone 8 and now it won't run. It throws a RootFrame_NavigationFailed with message No XAML was found at the location '/LaunchPage.xaml'.

我的应用程序中没有任何更改，该应用程序已经运行了一年多了，其他比运行WP8升级。可能是什么问题？

I have changed nothing from my app, which has been working for over a year now, other than run the WP8 upgrade. What could be the issue?

可能相关 - 如果我尝试在WMAppManifest.xml设计器中做任何事情，例如检查"支持大型瓷砖"，它会说"无法"加载清单" "该文档包含必须在设计者加载
之前修复的错误。修复错误后重新加载设计器。"看看xml，似乎没有什么不合适的地方。可能或可能与此问题无关，但我认为我会添加此内容。

Maybe related - If I try to do anything in the WMAppManifest.xml designer, for example checking "Support for large Tiles", it says "Unable to Load Manifest" "The document contains errors that must be fixed before the designer can be loaded. Reload the designer after the errors have been fixed." Looking at the xml, nothing seems out of place. May or may not be related to this issue but thought I'd add this.

推荐答案

当您升级项目时，它应该已经创建了一个这个项目适合你。  我会尝试再次升级它。  我会将您在应用中使用的dll更新为wp8版本。

When you upgraded the project it should have created a back of the project for you.  I would try upgrading it again.  I would all update dlls you are using in the app to wp8 versions.

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