I'm trying to create my first custom module.

A critical error has occurred.The command 'MoveComplete' is not valid for the previous step, make sure the step type is not changed between postbacks.

On the "Return" button click.    Here's what's in the event viewer:

AssemblyVersion: 7.0.4

PortalID: 0

PortalName: default

UserID: 1

UserName: admin

ActiveTabID: 36

ActiveTabName: Extensions

RawURL: /dotnetnuke/Host/Extensions/tabid/36/ctl/Install/rtab/36/portalid/0/Default.aspx?popUp=true

AbsoluteURL: /dotnetnuke/Default.aspx

AbsoluteURLReferrer: http://localhost/dotnetnuke/Host/Extensions/tabid/36/ctl/Install/rtab/36/portalid/0/Default.aspx?popUp=true

UserAgent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)

DefaultDataProvider: DotNetNuke.Data.SqlDataProvider, DotNetNuke

ExceptionGUID: 9fa8f5f5-b27f-4660-8851-b685d0869f80

InnerException: The command 'MoveComplete' is not valid for the previous step, make sure the step type is not changed between postbacks.

FileName:

FileLineNumber: 0

FileColumnNumber: 0

Method: System.Web.UI.WebControls.Wizard.OnBubbleEvent

StackTrace:

Message: DotNetNuke.Services.Exceptions.PageLoadException: The command 'MoveComplete' is not valid for the previous step, make sure the step type is not changed between postbacks. ---> System.InvalidOperationException: The command 'MoveComplete' is not valid for the previous step, make sure the step type is not changed between postbacks. at System.Web.UI.WebControls.Wizard.OnBubbleEvent(Object source, EventArgs e) at System.Web.UI.Control.RaiseBubbleEvent(Object source, EventArgs args) at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) --- End of inner exception stack trace ---

Source:

Server Name: DAK

Thanks in advance