VBA code works in debug mode but fails to run as macro - vba

Question

Hey i have a small problem that i can´t seam to solve... Im not the first to have this problem i found but none of the existing solutions worked on my code. so im stuck... The problem is that my code runs faster then what the functions can execute.
My code adds all worksheets that are of the same type together in a new sheet. And to indicate when how long every file is in the new sheet i want to change the interior of the last row to another color. My code can do that now but only in debug mode... and i don´t know how to "slow it down" so that i works whit my macro. Iv tried a delay function, DoEvent and adding a timer but none worked... Would really appreciate some tips on how to solve this or if there is a better way to do this. Thanks!
Sub MergeSheets()
Dim WorkSheetSource As Worksheet
Dim WorkSheetDestination As Worksheet
Dim RangeSource As Range
Dim RangeDestination As Range
Dim lngLastCol As Long
Dim lngSourceLastRow As Long
Dim lngDestinationLastRow As Long
Dim SheetName As String
Dim SkipSheets As String
'Set references up-front
Set WorkSheetDestination = ThisWorkbook.Worksheets("Import")
lngDestinationLastRow = LastOccupiedRowNum(WorkSheetDestination) '<~ defined below (and in Toolbelt)!
lngLastCol = LastOccupiedColNum(WorkSheetDestination) '<~ defined below (and in Toolbelt)!
'Set the initial destination range
Set RangeDestination = WorkSheetDestination.Cells(lngDestinationLastRow + 1, 1)
' (lngDestinationLastRow + 2) = what row to start adding on, 1 = start from column
' Skip this sheets ' the 2 makes a blank row between sheeeeets
SkipSheets = ("Import, Cover sheet, Control, Column description, Charts description")
'Loop through all sheets
For Each WorkSheetSource In ThisWorkbook.Worksheets ' Here i coud add a function where i can choose my Sheets?
DoEvents
'Make sure we skip the "Import" destination sheet!
If InStr(1, SkipSheets & ",", WorkSheetSource.Name & ",", vbTextCompare) = 0 Then
' Skip all Charts sheets
If InStr(WorkSheetSource.Name, "Status") Then
'Identify the last occupied row on this sheet
lngSourceLastRow = LastOccupiedRowNum(WorkSheetSource)
'Store the source data then copy it to the destination range
With WorkSheetSource
Set RangeSource = .Range(.Cells(3, 1), .Cells(lngSourceLastRow, lngLastCol)) ' 3 = what start row , 2 = how many columns
RangeSource.Copy Destination:=RangeDestination
End With
'Redefine the destination range now that new data has been added
LongDestinationLastRow = LastOccupiedRowNum(WorkSheetDestination)
Set RangeDestination = WorkSheetDestination.Cells(LongDestinationLastRow + 1, 1)
'LongDestinationLastRow.EntireRow.Interior.ColorIndex = 15
End If
' Find last row and give it colour
'Range("A" & Rows.Count).End(xlUp).Select
'ActiveCell.EntireRow.Interior.ColorIndex = 15
' don´t work... only in debugmode
End If
' **** Here the code works in debug mode but not in macro!*****
' Find last row and give it colour
Range("A" & Rows.Count).End(xlUp).Select
ActiveCell.EntireRow.Interior.ColorIndex = 15
'*************************************************************
Next WorkSheetSource
MsgBox "Done"
End Sub