I keep getting the following error.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.InvalidOperationException: Sequence contains no elements
Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Stack Trace:
[InvalidOperationException: Sequence contains no elements]
System.Data.Linq.SqlClient.SqlProvider.Execute(Expression query, QueryInfo queryInfo, IObjectReaderFactory factory, Object[] parentArgs, Object[] userArgs, ICompiledSubQuery[] subQueries, Object lastResult) +1191
System.Data.Linq.SqlClient.SqlProvider.ExecuteAll(Expression query, QueryInfo[] queryInfos, IObjectReaderFactory factory, Object[] userArguments, ICompiledSubQuery[] subQueries) +118
System.Data.Linq.SqlClient.SqlProvider.System.Data.Linq.Provider.IProvider.Execute(Expression query) +342
System.Data.Linq.Table`1.System.Linq.IQueryProvider.Execute(Expression expression) +58
System.Linq.Queryable.Single(IQueryable`1 source, Expression`1 predicate) +287
v2.ArticleLanguageSubscription.LoadByRec(tblArticleLanguageSubscription rec) +425
v2.ArticleLanguageSubscriptionFunctions.GetSubscribers(Int32 languageID, Int32 sectionID) +513
TutorialSubmit.SubmitTutorial(Object sender, EventArgs e) +9356
System.Web.UI.WebControls.LinkButton.OnClick(EventArgs e) +116
System.Web.UI.WebControls.LinkButton.RaisePostBackEvent(String eventArgument) +101
System.Web.UI.WebControls.LinkButton.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +10
System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13
System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +9671830
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1724
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