Me also, 6.1.3 DNN, need a fix:
ActiveTabName: CIO Forum
RawURL: /Forum/CIOForum/tabid/202/ctl/PostEdit/forumid/2/postid/1/action/reply/mid/691/Default.aspx
AbsoluteURL: /Default.aspx
AbsoluteURLReferrer: http://teams.macmhb.org.wowhostservices.net/Forum/CIOForum/tabid/202/ctl/PostEdit/forumid/2/postid/1/action/reply/mid/691/Default.aspx
UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7; rv:10.0.2) Gecko/20100101 Firefox/10.0.2
DefaultDataProvider: DotNetNuke.Data.SqlDataProvider, DotNetNuke.SqlDataProvider
ExceptionGUID: 26773fdb-5a07-4a27-b468-d83100da461d
InnerException: The underlying system threw an exception.
FileName:
FileLineNumber: 0
FileColumnNumber: 0
Method: System.IO.__Error.WinIOError
StackTrace:
Message: DotNetNuke.Services.Exceptions.ModuleLoadException: The underlying system threw an exception. ---> DotNetNuke.Services.FileSystem.FolderProviderException: The underlying system threw an exception. ---> System.IO.IOException: The process cannot access the file 'C:\inetpub\vhosts\kazoocmh.org\httpdocs\Portals\3\Forums\Attachments\120220ModelPicture.pptx' because it is being used by another process. at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath) at System.IO.File.Delete(String path) at DotNetNuke.Services.FileSystem.Internal.FileWrapper.Delete(String path) at DotNetNuke.Services.FileSystem.StandardFolderProvider.UpdateFile(IFolderInfo folder, String fileName, Stream content) at DotNetNuke.Services.FileSystem.StandardFolderProvider.AddFile(IFolderInfo folder, String fileName, Stream content) at DotNetNuke.Services.FileSystem.FileManager.MoveFile(IFileInfo file, IFolderInfo destinationFolder) --- End of inner exception stack trace --- at DotNetNuke.Services.FileSystem.FileManager.MoveFile(IFileInfo file, IFolderInfo destinationFolder) at DotNetNuke.Common.Utilities.FileSystemUtils.MoveFile(String strSourceFile, String strDestFile, PortalSettings settings) at DotNetNuke.Modules.Forum.WebControls.AttachmentControl.cmdUpload_Click(Object sender, EventArgs e) --- End of inner exception stack trace ---