I have had a number of users reporting getting this when trying to upgrade NukeSyndicate.

Failure     ExceptionSystem.Configuration.ConfigurationErrorsException: An error occurred loading a configuration file: Access to the path 'C:\WINDOWS\Microsoft.NET\Framework\V2.0.50727\Config\sf7ydtee.tmp' is denied. (C:\WINDOWS\Microsoft.NET\Framework\V2.0.50727\Config\web.config) ---> System.UnauthorizedAccessException: Access to the path 'C:\WINDOWS\Microsoft.NET\Framework\V2.0.50727\Config\sf7ydtee.tmp' is denied. at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath) at System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy) at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access) at System.CodeDom.Compiler.TempFileCollection.EnsureTempNameCreated() at System.CodeDom.Compiler.TempFileCollection.AddExtension(String fileExtension, Boolean keepFile) at System.CodeDom.Compiler.TempFileCollection.AddExtension(String fileExtension) at System.Configuration.Internal.WriteFileContext..ctor(String filename, String templateFilename) at System.Configuration.Internal.InternalConfigHost.StaticOpenStreamForWrite(String streamName, String templateStreamName, Object& writeContext, Boolean assertPermissions) at System.Configuration.Internal.InternalConfigHost.System.Configuration.Internal.IInternalConfigHost.OpenStreamForWrite(String streamName, String templateStreamName, Object& writeContext, Boolean assertPermissions) at System.Configuration.Internal.InternalConfigHost.System.Configuration.Internal.IInternalConfigHost.OpenStreamForWrite(String streamName, String templateStreamName, Object& writeContext) at System.Configuration.Internal.DelegatingConfigHost.OpenStreamForWrite(String streamName, String templateStreamName, Object& writeContext) at System.Configuration.UpdateConfigHost.OpenStreamForWrite(String streamName, String templateStreamName, Object& writeContext) at System.Configuration.MgmtConfigurationRecord.SaveAs(String filename, ConfigurationSaveMode saveMode, Boolean forceUpdateAll) --- End of inner exception stack trace --- at System.Configuration.MgmtConfigurationRecord.SaveAs(String filename, ConfigurationSaveMode saveMode, Boolean forceUpdateAll) at System.Configuration.Configuration.SaveAsImpl(String filename, ConfigurationSaveMode saveMode, Boolean forceSaveAll) at System.Configuration.Configuration.Save() at DotNetNuke.Common.Utilities.Config.AddCodeSubDirectory(String name) at DotNetNuke.Modules.Admin.ResourceInstaller.PaDnnInstallerBase.CreateModuleFile(PaFile File, PaFolder Folder) at DotNetNuke.Modules.Admin.ResourceInstaller.PaDnnInstallerBase.CreateFiles(PaFolder Folder) at DotNetNuke.Modules.Admin.ResourceInstaller.PaDnnInstallerBase.Install(PaFolderCollection folders) at DotNetNuke.Modules.Admin.ResourceInstaller.PaInstaller.Install()

It only seems to effect remotely hosted sites, if you install locally it is fine. I am unsure whether this in an actual ACL issue on the host, or whether something has changed. Additionally I should add this module is written in C# and uses the App_Code folder for the new dynamic compilation method. I have not had this reported prior to 4.3.3. Can anyone else reproduce this with their modules since then? Can any core team member comment on what might have changed

Here is the offending method. This code fails in a hosted environment when installing NukeSyndicate at least. Got tired of looking for the file, so I just used Refelctor as you can see


public static void AddCodeSubDirectory(string name)
{
   System.Configuration.Configuration configuration1 = WebConfigurationManager.OpenWebConfiguration(Globals.ApplicationPath);
   CompilationSection section1 = (CompilationSection) configuration1.GetSection("system.web/compilation");
   bool flag1 = false;

   try
   {

      foreach (CodeSubDirectory directory1 in section1.CodeSubDirectories)
      {
          if (Operators.CompareString(directory1.DirectoryName, name, false) == 0)
          {
             flag1 = true; goto Label_008B;
          }
      }
   }

   finally
   {
      IEnumerator enumerator1;

      if (enumerator1 is IDisposable)
      {
         (enumerator1 as IDisposable).Dispose();
      }
   }

   Label_008B: if (!flag1)
   {
      section1.CodeSubDirectories.Add(new CodeSubDirectory(name)); configuration1.Save();
   }
}

Logged in Gemini here