Run-time error '1004' with Range and copy

Hi,

Hopefully this is easy...

Running the following code I get a Run-time error '1004': Method 'Range' of Object '_worksheet' failed.

Sub Paste_Observation_probabilities()

    Set ws = ThisWorkbook.Sheets("Input Sheet") ' sheet name for locating number of indicators
    ws.Select

    numind = Range("C3").Value ' obtaining number of indicators (columns)
    newmaxstat = Range("B22").Value ' total number of observational states
    totstats = Range("B20").Value ' total number of state and observation combinations

    Set ws = ThisWorkbook.Sheets("Observation combinations")
    ws.Select

    ws.Range(Cells(2, numind * 2 + 1), Cells(newmaxstat + 1, numind * 2 + 1)).Copy
 
    Set ws1 = ThisWorkbook.Sheets("No information obtained")
    ws1.Select
    Range(Cells(2, numind * 2 + 2), Cells(totstats + 1, numind * 2 + 2)).PasteSpecial
    
    ws.Range(Cells(newmaxstat + (2 * 1 + 2), numind * 2 + 1), Cells(2 * newmaxstat + (2 * 2 - 1), numind * 2 + 1)).Copy    

Set ws1 = ThisWorkbook.Sheets("5")
    ws1.Select
    Range(Cells(2, numind * 2 + 2), Cells(totstats + 1, numind * 2 + 2)).PasteSpecial
    
End Sub

The problem occurs at the highlighted code, however the first and last cells are referencing the correct cells in the ("Observation combinations") worksheet. The starting and ending cells are dynamically changed via a user input and therefore need to be calculated as shown; also the column is not fixed either.

Can you help?

Thanks,

Mbrolass.