The problem is as follows: Register skin object adds ctl=Register to the current QueryString which is then makes DNN either load a custom User Registration page or just replace current content with User Account module.

With this bug (which I am experiencing on my sites on 4.5.3), ctl=Register generates the following error:

System.Web.HttpException: Could not load type ''. ---> System.ArgumentException: String cannot have zero length. at System.Reflection.Assembly.GetType(String name, Boolean throwOnError, Boolean ignoreCase) at System.Web.Compilation.BuildManager.GetType(String typeName, Boolean throwOnError, Boolean ignoreCase) --- End of inner exception stack trace --- at System.Web.Compilation.BuildManager.GetType(String typeName, Boolean throwOnError, Boolean ignoreCase) at DotNetNuke.Framework.Reflection.CreateType(String TypeName, String CacheKey, Boolean UseCache, Boolean IgnoreErrors)

Any takers?

Thanks for both logging and debugging... I am re-opening the issue with a link to this thread.  Sometimes its just difficult for some of the folks working the issue log to reproduce problems with our descriptions.  When in doubt, stick a little extra detail in there... it sure never hurts *grin*.

Cheers!

Scott Willhite, Co-Founder DNN

The proper fix for this issue is the following:

FROM THIS:

Response.Redirect(NavigateURL(PortalSettings.UserTabId,"returnurl=" & ReturnUrl), True)

TO THIS:

Response.Redirect(NavigateURL(PortalSettings.UserTabId, "", "returnurl=" & ReturnUrl), True)

The previous suggestion would still not have loaded the User Page specified in Site Settings.