>>>And here is an error I am getting:
>>>Alias 'CURITEMDATA' is not found. frmseconds.cbodefects.ControlSource 0
>>>If it's not found then how come it did not fail in any line above the erroring line?
>>>
>>>Thanks for help.
>>
>>Did you close the cursor somewhere after this code?
>
>No, but I am switching data sessions though. Strange thing is that sometimes it fails, sometime not.

Try to unbind your combobox before switching DS.