This error appears when some members try and access any social module, most other members seem to work ok. I can't see any difference between the members, any suggestions?

Thanks,

I am not familiar with this error. Can you post the full error message from the Event Viewer? You can remove any identifying information about your domain or server if you want.

Np...

AssemblyVersion: 5.5.1
PortalID: 0
PortalName: One Jelf
UserID: 6724
ActiveTabID: 568
ActiveTabName: Members
RawURL: /Home/SalesAcademyTESTING/Communication/Members.aspx
AbsoluteURL: /Default.aspx
AbsoluteURLReferrer:
UserAgent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; Trident/4.0; .NET CLR 2.0.50727)
DefaultDataProvider: DotNetNuke.Data.SqlDataProvider, DotNetNuke.SqlDataProvider
ExceptionGUID: e7656c5f-0b0c-4b29-a77b-ff46ffa2a799
InnerException: Length cannot be less than zero. Parameter name: length
FileName:
FileLineNumber: 0
FileColumnNumber: 0
Method: System.String.InternalSubStringWithChecks
StackTrace:
Message: DotNetNuke.Services.Exceptions.PageLoadException: Length cannot be less than zero. Parameter name: length ---> System.ArgumentOutOfRangeException: Length cannot be less than zero. Parameter name: length at System.String.InternalSubStringWithChecks(Int32 startIndex, Int32 length, Boolean fAlwaysCopy) at System.String.Substring(Int32 startIndex, Int32 length) at Active.Modules.Social.Main.Page_Load(Object sender, EventArgs e) at System.EventHandler.Invoke(Object sender, EventArgs e) at System.Web.UI.Control.OnLoad(EventArgs e) at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) --- End of inner exception stack trace ---

Thanks

How were the users created? Did you import them or otherwise create them artificially? Does a new user, created with the AS or DNN registration work correctly?

Good question, the users were created via a script because the entire site is for internal intranet users only and managed via an Active Directory module. I thought this could be the cause too but other users created exactly the same way work fine, very odd.

There still might be something different between the users that work and those that don't. I would suggest comparing two different users in the database. Select by UserId's from these tables:

UserProfile
UserPortals
UserRoles
Users
activesocial_User