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HomeHomeUsing DNN Platf...Using DNN Platf...Administration ...Administration ...Error, every time the site is restartedError, every time the site is restarted
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7/6/2011 3:44 PM
 
Franz Fiala


fiala.cc/
Joined: 7/28/2005
Posts: 24
Every time, my DotNetNuke application is restarted (using Host->Restart Application)  I receive the following error message:

An error has occurred.
DotNetNuke.Services.Exceptions.PageLoadException: The string parameter 'tagPrefix' cannot be null or empty. (Detailed error message below).

After this error page the site ca be accessed normally without any errors. But after some time of inactivity when the site is accessed via a new browser window the error is again displayed and visible for the user within the page accessed and if the user procceeds, the message disapears.

It is a very basic installation of DotNetNuke 5.6.3 upgraded several times, 3 Portals, one additional module (GalleryServerPro).

A completely new installation for testing puposes (including the same additional module) on the same server is error free.

Does anybody know where this error could come from? 

Complete error listing:
An error has occurred.
DotNetNuke.Services.Exceptions.PageLoadException: The string parameter 'tagPrefix' cannot be null or empty. Parameter name: tagPrefix ---> System.ArgumentException: The string parameter 'tagPrefix' cannot be null or empty. Parameter name: tagPrefix at System.Web.UI.TagPrefixAttribute..ctor(String namespaceName, String tagPrefix) at System.Reflection.CustomAttribute._CreateCaObject(RuntimeModule pModule, IRuntimeMethodInfo pCtor, Byte** ppBlob, Byte* pEndBlob, Int32* pcNamedArgs) at System.Reflection.CustomAttribute.CreateCaObject(RuntimeModule module, IRuntimeMethodInfo ctor, IntPtr& blob, IntPtr blobEnd, Int32& namedArgs) at System.Reflection.CustomAttribute.GetCustomAttributes(RuntimeModule decoratedModule, Int32 decoratedMetadataToken, Int32 pcaCount, RuntimeType attributeFilterType, Boolean mustBeInheritable, IList derivedAttributes, Boolean isDecoratedTargetSecurityTransparent) at System.Reflection.CustomAttribute.GetCustomAttributes(RuntimeAssembly assembly, RuntimeType caType) at System.Reflection.RuntimeAssembly.GetCustomAttributes(Boolean inherit) at System.Web.UI.AssemblyCache.GetAjaxFrameworkAssemblyAttribute(Assembly assembly) at System.Web.UI.ScriptManager.get_DefaultAjaxFrameworkAssembly() at System.Web.UI.ScriptManager..ctor() at DotNetNuke.Framework.AJAX.AddScriptManager(Page objPage) at DotNetNuke.Framework.PageBase.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 ---
 
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7/7/2011 9:11 AM
 

Joined: 1/1/0001
Posts: 0
The only thing I find on this error is coming from the Gallery module. Make sure you have the latest, or try uninstalling, and see what happens. Here's the link to the thread.
 
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