I'm simply gathering all the text on the first sheet with red font colour and storing it in an array. After that, I want to switch to a different sheet and open a particular cell where I want to initially enter the values from my prior array. However, the section where I selected a cell on the other page produced an error code of 400. Having previously utilized it, I am certain that it is correct. I'm not sure whether there's any manipulation in my code at the beginning that could have an impact on that.
Sub isFontRed()
    Cells(2, 1).Select
    Dim missingJobs(0 To 600) As String
    Dim size As Integer, row As Integer, col As Integer, jobIndex As Integer
    jobIndex = 0
    For row = 2 To 10 '600
        For col = 1 To 2
            If (CStr(Cells(row, col).Font.ColorIndex) = 3) Then
               missingJobs(jobIndex) = Cells(row, col)
               jobIndex = jobIndex + 1
           End If
       Next col
    Next row
    Dim jobs As String
    jobs = ""
    For i = 0 To UBound(missingJobs) - 1
        jobs = jobs + missingJobs(i) + ", "
    Next i
    Worksheets("New Jobs in New Folder").Activate
    Cells(4, 2).Activate
End Sub