We are occasionally receiving the following error message. It appears after one or more users have accessed the child portal via the link provided on the parent portal...

AssemblyVersion: 5.6.1
PortalID: 0
PortalName: Cornbelt Federation of Cosmopolitan International
UserID: -1
UserName:
ActiveTabID: 62
ActiveTabName: Clubs
RawURL: /Clubs.aspx
AbsoluteURL: /Default.aspx
AbsoluteURLReferrer: http://www.cornbeltcosmos.org/
UserAgent: Mozilla/5.0 (Linux; U; Android 3.2; en-us; Transformer TF101 Build/HTJ85B) AppleWebKit/534.13 (KHTML, like Gecko) Version/4.0 Safari/534.13
DefaultDataProvider: DotNetNuke.Data.SqlDataProvider, DotNetNuke.SqlDataProvider
ExceptionGUID: efaedb63-1df0-4ca5-bb60-73590d324813
InnerException: The file 'C:\Inetpub\CornbeltFederation\www\Portals\0\Cache\Pages\93_ACABA51644A302FBB325E30E7931BAF8.data.resources' already exists.
FileName:
FileLineNumber: 0
FileColumnNumber: 0
Method: System.IO.__Error.WinIOError
StackTrace:
Message: System.IO.IOException: The file 'C:\Inetpub\CornbeltFederation\www\Portals\0\Cache\Pages\93_ACABA51644A302FBB325E30E7931BAF8.data.resources' already exists. 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, FileShare share, Int32 bufferSize, FileOptions options, String msgPath, Boolean bFromProxy) at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access) at DotNetNuke.Services.ModuleCache.FileProvider.SetModule(Int32 tabModuleId, String cacheKey, TimeSpan duration, Byte[] output)
Source:
Server Name: DURABLE-DC


DNN Version: 5.6.1
OS: Windows Server 2008 R2
SQL: Windows SQL Server 2008 R2
.NET Framework 3.5.1

Parent and/or Portal sites hang for several minutes...eventually restarting the IIS and coming back up to the home page. Very Wierd!

Any insight would be greatly appreciated...

We upgraded to 5.6.3, and are still getting the same types of events in the log...

DotNetNuke.Services.Exceptions.PageLoadException: Validation of viewstate MAC failed.
If this application is hosted by a Web Farm or cluster, ensure that <machineKey> configuration
specifies the same validationKey and validation algorithm. AutoGenerate cannot be used in a cluster.
---> System.Web.HttpException: Validation of viewstate MAC failed. If this application is hosted by
a Web Farm or cluster, ensure that <machineKey> configuration specifies the same validationKey and
validation algorithm. AutoGenerate cannot be used in a cluster. ---> System.Web.UI.ViewStateException:
Invalid viewstate. Client IP: 216.81.208.241 Port: 44597 User-Agent: Mozilla/4.0 (compatible; MSIE 8.0;
Windows NT 5.1; Trident/4.0; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729; .NET4.0C;
.NET4.0E) ViewState: 0Ix5Fi5cv3dWGanhTLhnK1j9hQerXInYVoNRIzC/VvgTzrShUuzGYBICupL+d7Z0hOpx973MpMNpcvu4pt
ppkmwTMv+zbF8kQ8EUJXNaHe05X5NVUKj320DclAAzkb4OPLmlpJh0zJERL231pWl1VKA9m1ae9YuM83Nvs/ovy/HGUSdLoOdoTvxdS
xZj7HqoJy4wo3fKX+7gg8g3YhtTaH9OHY2N1gRB/bK26p3QT2+avif89XzLHyLGRig5Pvv3lrsGejd59ehfN+xYdijN3mUAba23k//q
/h+Lsu+sqxvINob9Yw4mu0LcfuWejsI0RvJAzx7X63aEF7iPDrJ4AfAsp21zF7lqodFIyrW8ZxacGTez27qVl+crkEqkGgSubBhZdt2
kzJ6ynSNTv4aC/w2iaEJJgBoxoLu+tKH0Fo1VFbB5WUNLpX/cPW4ZqJt67VfA5DKwdY+fY8oMDkcuKxcrxTIh8tazn/ZgCZQHa2d8bE
lA0YlIofuaEU8lYAZdrd0ua9kCAKImgat+M4/rqbt19ES9QI4TCcUAE8wn1CZQ6i6phgLTPwXQYqiJsgQ8wnwCEcT2R6b9z/BQMetEa
wXPgnEz2EXydevl6RQwQn6TmjcFJpjVG/5f1REqMoiCwOBrOk75iee/D5SBGwtf30yZxjgOP8q73aOTG5K/g3hfhzRFK5+3UwV+H4O9
Yne+H7SOksFQ9DIJWWuXeJF6IDNuSkPYjkMMstHbHN+xEf96saL+Xd6gWBLgaKPpu5/3OKLTvYbfISVju7/ChdK5xj9a9sjrmzGUN6G...
--- End of inner exception stack trace --- at System.Web.UI.ViewStateException.ThrowError(Exception inner,
String persistedState, String errorPageMessage, Boolean macValidati ) at
System.Web.UI.ObjectStateFormatter.Deserialize(String inputString) at
System.Web.UI.Util.DeserializeWithAssert(IStateFormatter formatter, String serializedState) at
System.Web.UI.HiddenFieldPageStatePersister.Load() at System.Web.UI.Page.LoadPageStateFromPersistenceMedium()
at System.Web.UI.Page.LoadAllState() at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint,
Boolean includeStagesAfterAsyncPoint) --- End of inner exception stack trace ---
Source:


We have several sites hosted on the same server. This site is the only one with child portals. The other sites are not having this issue.