.net - Problem when selecting MySQL stored procedure to populate datatable in Visual Studio -

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i looking populate datatable mysql stored procedure in visual studio. usual , add tableadapter dataset , begin fill in details.

i create connection string, tests fine , returns stored procedures, go populate stored procedure. click on select combobox , select stored procedure want use population. once click on dialogs , datatable disappear , goes usual dataset screen. enter image description here

what happening , can stop it?! have tested stored procedure , works expected.

edit: tried other stored procedures , working fine...what going wrong?!

ok, realised there 2 columns in select statements had same alias. re-aliased (real word?!) column , works now.


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