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我已经正确安装了 DNN 7，没有任何错误，我还向 dnndev.me 站点添加了一个子页面（testdemo）。它工作得很好，然后我添加了一个模块并将该模块添加到子页面（dnndev.me/testdemo）。我已经安装了皮肤，它也完美应用。[也在 portal/_default/skins 文件夹中找到它]

接下来我编辑了模块 [不是很大，只是添加了一个带有文本的标签框] 并构建了解决方案，然后在 dnndev.me/testdemo 页面中进行刷新时显示 DNN 错误

在地址选项卡中它显示 -

http://dnndev.me/Default.aspx?tabid=482&error=An%20unexpected%20error%20has%20occurred&content=0

即使是正常的 ddndev.me 也没有运行显示相同，

所以我打开了 Portal/_default/logs 文件，我发现了以下错误，

2014-08-01 13:03:57,333 [USER6-PC][Thread:40][FATAL] DotNetNuke.Framework.PageBase - An error has occurred while loading page.
System.NullReferenceException: Object reference not set to an instance of an object.
   at DotNetNuke.UI.Skins.Skin.GetSkin(PageBase page)
   at DotNetNuke.Framework.DefaultPage.OnInit(EventArgs e)
   at System.Web.UI.Control.InitRecursive(Control namingContainer)
   at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)

2014-08-01 13:03:57,333 [USER6-PC][Thread:40][ERROR] DotNetNuke.Services.Exceptions.Exceptions - ~/Default.aspx?tabid=55&error=terminate
System.NullReferenceException: Object reference not set to an instance of an object.
   at DotNetNuke.UI.Skins.Skin.GetSkin(PageBase page)
   at DotNetNuke.Framework.DefaultPage.OnInit(EventArgs e)
   at System.Web.UI.Control.InitRecursive(Control namingContainer)
   at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)

2014-08-01 13:03:57,337 [USER6-PC][Thread:40][ERROR] DotNetNuke.Services.Exceptions.Exceptions - DotNetNuke.Services.Exceptions.PageLoadException: Object reference not set to an instance of an object. ---> System.NullReferenceException: Object reference not set to an instance of an object.
   at DotNetNuke.UI.Skins.Skin.GetSkin(PageBase page)
   at DotNetNuke.Framework.DefaultPage.OnInit(EventArgs e)
   at System.Web.UI.Control.InitRecursive(Control namingContainer)
   at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)

   --- End of inner exception stack trace ---

它仍然在顶部显示更多，但空间不足以粘贴所有内容..

谁能解决这个问题？？

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