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.
[InvalidOperationException: Collection was modified after the enumerator was instantiated.] System.Collections.Specialized.NameObjectKeysEnumerator.MoveNext() +7081144 TextObject.Page_Load(Object sender, EventArgs e) in c:\TeamCity\buildAgent\work\FileUpload\1\2\StorefrontSoftware\fileupload\TextObject.aspx.cs:63 System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +25 System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +42 System.Web.UI.Control.OnLoad(EventArgs e) +132 System.Web.UI.Control.LoadRecursive() +66 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2428