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HomeHomeUsing DNN Platf...Using DNN Platf...Administration ...Administration ...Object reference not set to an instance of an object. ErrorObject reference not set to an instance of an object. Error
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1/4/2011 6:24 PM
 
Herb Benton


www.HerbBenton.com
Joined: 6/17/2005
Posts: 91
Any ideas on the following error:

AssemblyVersion: 5.1.4
PortalID: 0
PortalName: ***
UserID: -1
UserName:
ActiveTabID: 125
ActiveTabName: Login
RawURL: /Home/Login.aspx?returnurl=%2fdefault.aspx
AbsoluteURL: /Default.aspx
AbsoluteURLReferrer: http://www.***.com/Home/Login.aspx?re...
UserAgent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.04506.648; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729; MS-RTC LM 8)
DefaultDataProvider: DotNetNuke.Data.SqlDataProvider, DotNetNuke.SqlDataProvider
ExceptionGUID: 79fb9771-88db-4c85-88c9-ccf9fd0fae88
InnerException: Object reference not set to an instance of an object.
FileName:
FileLineNumber: 0
FileColumnNumber: 0
Method: DotNetNuke.Common.Utilities.Config.GetPersistentCookieTimeout
StackTrace:
Message: DotNetNuke.Services.Exceptions.PageLoadException: Object reference not set to an instance of an object. ---> System.NullReferenceException: Object reference not set to an instance of an object. at DotNetNuke.Common.Utilities.Config.GetPersistentCookieTimeout() at DotNetNuke.Entities.Users.UserController.UserLogin(Int32 portalId, UserInfo user, String PortalName, String IP, Boolean CreatePersistentCookie) at DotNetNuke.Modules.Admin.Authentication.Login.ValidateUser(UserInfo objUser, Boolean ignoreExpiring) at DotNetNuke.Modules.Admin.Authentication.Login.UserAuthenticated(Object sender, UserAuthenticatedEventArgs e) at DotNetNuke.Modules.Admin.Authentication.Login.cmdLogin_Click(Object sender, EventArgs e) at System.Web.UI.WebControls.Button.OnClick(EventArgs e) at System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) at System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) --- End of inner exception stack trace ---
Source:
Server Name: ***
Wisconsins DNN User Group: www.WIDNN.com
Visit my home page: www.HerbBenton.com
 
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1/5/2011 11:16 AM
Accepted Answer 
William Severance


www.wesnetdesigns.com
Joined: 2/18/2005
Posts: 3253
Usually this error indicates that the addition of a <location> section in the web.config is preventing the DotNetNuke code from obtaing a value for the "timeout" attribute of the <system.web><authentication><forms> node. Later versions of DotNetNuke added defensive coding to account for this possibility. If you must include a <location> section (note that in some cases it accidentally gets added by Visual Studio or IIS configuration changes) in web.config, make sure that the <location> section contains a properly structured <system.web><authentication><forms> section with a timeout attribute and value on the <forms> node.

As I recall, you can also add a PersistentCookieTimeout node to the web.config <appSettings> section as follows:

<add key="PersistentCookieTimeout" value="3600" />

with your desired value. That will take precedence over the timeout attribute value in the <forms> node and prevent the code from trying to access that node's value.

Bill, WESNet Designs
Team Lead - DotNetNuke Gallery Module Project (Not Actively Being Developed)
Extensions Forge Projects . . .
Current: UserExport, ContentDeJour, ePrayer, DNN NewsTicker, By Invitation
Coming Soon: FRBO-For Rent By Owner
 
New Post
1/5/2011 11:26 AM
 
Herb Benton


www.HerbBenton.com
Joined: 6/17/2005
Posts: 91
Thank you William!

I had thought the same thing, or along those lines as well. Currently, the web.config is sitting on a server that I don't have access to and was contacted by a client to help with the error. Unfortunately, the event log is sometimes a bit ambiguous and I wasn't sure about the error.

Is there another source (website) you referenced to discover the possible cause of this error, or was it based off of experience?

Thanks again!
Wisconsins DNN User Group: www.WIDNN.com
Visit my home page: www.HerbBenton.com
 
New Post
1/5/2011 2:48 PM
 
William Severance


www.wesnetdesigns.com
Joined: 2/18/2005
Posts: 3253
Based on experience and my recollection of this issue being a problem when a <location> section in the web.config contained an improperly structured or missing timeout attribute on the <authentication><forms> node, I'm pretty sure that is the source of this error. I also took a look at the source code for the GetPersistentCookieTimeout method to confirm that including a PersistentCookieTimeout setting in the <appSettings> node of web.config may be the solution if a <location> section must be included in the site's web.config.

Unfortunately, I can't think of anyway for you to know if that is the cause without access to the web.config file.
Bill, WESNet Designs
Team Lead - DotNetNuke Gallery Module Project (Not Actively Being Developed)
Extensions Forge Projects . . .
Current: UserExport, ContentDeJour, ePrayer, DNN NewsTicker, By Invitation
Coming Soon: FRBO-For Rent By Owner
 
New Post
1/5/2011 5:00 PM
 
Herb Benton


www.HerbBenton.com
Joined: 6/17/2005
Posts: 91
I'm going to be with the client and their IT department tomorrow, I'll go over the config file with them then.

As for accessing the config file, I know the "Accidental GeeK" was working on a module for release with 5.6 that would allow for access to the config file from within the Host area  - I haven't worked with 5.6 yet so I'm not sure if it is there.

Here's a link to Joes blog post: http://tinyurl.com/24l5utj
Wisconsins DNN User Group: www.WIDNN.com
Visit my home page: www.HerbBenton.com
 
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