Hi guys,

Very strange problem in Members section. I have a registration form and create members using Member.MakeNew().

After new user is created if I try to search them (by name) in Members section I get YSOD:

The given key was not present in the dictionary.

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.Collections.Generic.KeyNotFoundException: The given key was not present in the dictionary.

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: 


[KeyNotFoundException: The given key was not present in the dictionary.]
   System.Collections.Generic.Dictionary`2.get_Item(TKey key) +14379623
   umbraco.presentation.umbraco.members.MemberSearch.<ButtonSearch_Click>b__3(SearchResult x) +143
   System.Linq.WhereSelectEnumerableIterator`2.MoveNext() +248
   System.Web.UI.WebControls.Repeater.CreateControlHierarchy(Boolean useDataSource) +712
   System.Web.UI.WebControls.Repeater.OnDataBinding(EventArgs e) +164
   System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +155
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3804

Search for other users work fine at the same time. The strange part is if I open this member and press Save button (without even updating any properties) the problem goes away, the search works and returns this user. I use Umbraco v6.1.6.

Any idea why this might happen?

Thank you.