An error experienced with the DotNetNuke file manager: A critical error has occurred.Invalid postback or callback argument. Event validation is enabled using <pages enableEventValidation=”true”/> in configuration or <%@ Page EnableEventValidation=”true” %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered […]
Category: DotNetNuke
User Password Changing and Properties
Dependant upon the permissions associated with a user, different options are available with regards to the passwords used on a DotNetNuke website. Some of the options available are: Duration of password before change required Required length Password strength (number of non-alphanumeric characters Given below are the password options available to different DotNetNuke accounts. Host As […]
Remove Border Around Module
An old DotNetNuke had a small border around the module section of the website, despite the skin having no cellpadding set as appropriately in the tables. I found that when the container was not specified DotNetNuke used a default container designed with no title.This was creating a small 2 pixel border around the module. This […]
Error Edit Portals is currently unavailable
Deleting a DotNetNuke portal failed with an error, caused by a conflict in the database. The full error message was: Error: Edit Portals is currently unavailable. DotNetNuke.ModuleLoadException: DELETE statement conflicted with COLUMN REFERENCE constraint ‘FK_Skins_Tabs’. The conflict occurred in database ‘dnn’, table ‘Skins’, column ‘TabID’. The statement has been terminated. —> System.Data.SqlClient.SqlException: DELETE statement conflicted […]
Create a New Database User
A new Database SQL user can be added from the DotNetNuke Host SQL page. This user can then be used as a replacement for the existing user in the connection string in the web.config file. In the example below a new user called , dnnDbUser, will be created and added as a db owner of […]
Error FAQ Module Failed to Load
Updating the DotNetNuke FAQ module to version 04.04.00 the module failed to load, reporting the error Error: FAQs is currently unavailable. The full reported error is given below: Error: FAQs is currently unavailable.DotNetNuke.Services.Exceptions.ModuleLoadException: Could not load type ‘DotNetNuke.Modules.FAQs.FAQs’. —> System.Web.HttpParseException: Could not load type ‘DotNetNuke.Modules.FAQs.FAQs’. —> System.Exception: Could not load type ‘DotNetNuke.Modules.FAQs.FAQs’. —> System.Exception: Could […]
Module Settings Error
Developing a new module errors were given. Two different sets of symptoms, for different versions of DotNetNuke. To correct both of these errors ensure that no key for the module is set to ‘Settings‘. I like to also avoid module files being called Settings too. DotNetNuke 3.1.1 In this version of DotNetNuke I found that […]
Text Editor Object Reference Error
An old DotNetNuke (ver. 3) website had a text editor which with an error. The error Object reference not set to an instance of an object was showing when using the text editor. There was no error when using the text editor with the default American language set, either by the user account, or within […]
Restoring a DotNetNuke Website
Restoring a DotNetNuke Website from a backup either to a new site or to a new install can be covered in a few easy steps. I will assume that the action is taking place on the server, without a control panel interface. I have restored backups where a website has been transferred for hosting, moved […]
Popup Calendar Localisation
With the introduction of IE7 an error in the use of the DotNetNuke pop-up calendar control was introduced. Dates entered in the popup calendar are rendered in American format (mm/dd/yyyy) rather than the localised version, English (dd/mm/yyyy). Looking at the calendar code /js/PopupCalendar.js. The line at issue is the setting of the anchorval in the […]


