Run Time Error after refreshing the form

[zeee]

I have a simple form with a reset, a submit query and a close button. If I click the reset button and then try to run a qery I get an error message that says 'Run Time Error '2001': you canceled the last operation'. What does this mean and how can I get rid of it?. Here is my code....

Private Sub CloseButton_Click()
DoCmd.Close
End Sub

Private Sub RefreshButton_Click()
[bemDescription] = ""
[bemQueue] = ""
[bemPriority] = ""
[bemStatus] = ""
[bemEntity] = ""
[bemCptyID] = ""
[bemCptyType] = ""
[bemValueDateFrom] = ""
[bemValueDateTo] = ""
[bemCreationDateFrom] = ""
[bemCreationDateTo] = ""

End Sub

Private Sub QueryButton_Click()
Me.Visible = False
DoCmd.OpenQuery "bemExceptionsQuery", acViewNormal, acReadOnly
End Sub