Prog compiles with F5 but not Alt1

Sub MakeBtnOnFormTtable ' Creates the buttons on the form Ttable 
   MakeButtonArray ("FormTtable", "btnTt", "ClickTtableBtn", txtFontSize.Text , txtStartPt.Text _
   , txtNoOfCols.Text , txtHeight.Text , StudentNumber)
End Sub

Sub MakeButtonArray (frmName, btnName, btnClickSubName, btnFontSize, StartRow, btnNoOfCols, btnHeight, btnTotalNo)
''    FUNCTIONS - Makes buttons via programming
   btnWidth = Int( 240/btnNoOfCols) 
   Ccol = 0
   Rrow = StartRow
   For btnNo = 1 To btnTotalNo
      AddButton (frmName, btnName&btnNo, Ccol, Rrow, btnWidth, btnHeight, btnNo) 
      Button(btnName&btnNo).fontsize = btnFontSize
      AddEvent(btnName&btnNo,click,btnClickSubName)
      Ccol = Ccol + btnWidth
      If Ccol >= 240 Then
         Ccol = 0
         Rrow = Rrow + btnHeight
      End If
   Next
End Sub