Excel VBA Object required error when populating ComboBox - excel

Question

I am getting the following error --
Run-time error '424' : Object required
Here is the code where I am getting the error message. The line where the error appears has been highlighted with ****
Sub LoadDropdown_Click()
Dim cnt As ADODB.Connection
Dim rst As ADODB.Recordset
Dim stDB As String, stSQL As String
Dim xlCalc As XlCalculation
Dim vaData As Variant
Dim k As Long
Set cnt = New ADODB.Connection
cnt.connectionString = Module1.GetConnectionString
stSQL = "EXEC dbo.GetData"
With cnt
.CursorLocation = adUseClient 'Necesary for creating disconnected recordset.
.Open stConn 'Open connection.
'Instantiate the Recordsetobject and execute the SQL-state.
Set rst = .Execute(stSQL)
End With
With rst
Set .ActiveConnection = Nothing 'Disconnect the recordset.
k = .Fields.Count
'Populate the array with the whole recordset.
vaData = .GetRows
End With
'Close the connection.
cnt.Close
'Manipulate the Listbox's properties and show the form.
With ComboBox21
.Clear ' **** the error comes at this line since ComboBox21 is empty ******
.BoundColumn = k
.List = Application.Transpose(vaData)
.ListIndex = -1
End With
Dim i As Integer
'Release objects from memory.
Set rst = Nothing
Set cnt = Nothing
End Sub
These are the things I have veified --
The ComboBox actually exists in Sheet1, called Priorities. See this screenshot showing that Sheet1 contains a Combobox called ComboBox21
The below function, LoadDropdown_Click is present in Sheet1. See this screenshot for details
This code works when running from certain machines. It used to work on my machine earlier, but now I am getting this error suddenly without having made any changes to the code or the environment.
I tried changing ComboBox21 to Sheet1.ComboBox21, but I got a compile error - Method or Data member not found.
It will be great if someone can help!

Answer 1

Please change your code:
With ComboBox21
.Clear ' **** the error comes at this line since ComboBox21 is empty ******
.BoundColumn = k
.List = Application.Transpose(vaData)
.ListIndex = -1
End With
'With the below:
Sheet1.ComboBox21.Clear
With Sheet1.ComboBox21
.BoundColumn = k
.List = Application.Transpose(vaData)
.ListIndex = -1
End With

Answer 2

Basically, you just add "On Error Resume Next" to avoid those annoying error messages popping up and then add "Err.Clear" to clear the error flag just in case.
Private Sub ComboBox1_Change()
On Error Resume Next
ComboBox5.List = Sheets("Data").Range("B1:B6").Value
Err.Clear
End Sub
NOTE: This is probably not the right way of doing things but at least it works on my end