Method range of object -Worksheet failed

Hi

I have a macro that loops through each sheet in a workbook and copies certain ranges to a temporary sheet. As it loops through each worksheet, I would like it to store the name of the worksheet in cell AA1. I am using the sub below but keep getting the message "Method 'Range' of object '_worksheet' failed" at line 27. I'm not sure why, as all the other references to the worksheet variable 'projectsheet' seem to be working fine.

Dim nextrow As Integer
Dim i As Integer
Dim starttemp As Integer
Dim endrow As Integer

Sub resource1()
starttemp = 1
Dim projectsheet As Worksheet
Dim cel As Range
Dim temprows As Range
Dim startrow As Integer
Dim shtname As String
Dim rows As Integer
'Clear the contents of the temp sheet
Application.ScreenUpdating = False
For Each cel In Worksheets("Temp").Range("A1:T500")
cel.ClearContents
Next cel
Application.ScreenUpdating = True
Worksheets("Res Plan").Select
Range("A1").Select
'search each tab beyond tab 2
For Each projectsheet In Worksheets
If projectsheet.Index < 3 Then GoTo Next1
shtname = projectsheet.Name
MsgBox shtname
projectsheet.Range("aa:1").Value = shtname
'Find the Resource utilisation block on the projectsheet sheet
For Each cel In projectsheet.Range("A1:C200")
If cel.Value = "RESOURCE UTILISATION" Then GoTo Next2
Next cel
Next2:
startrow = cel.Row
endrow = startrow + 9
'Copy the range in blocks of 10
projectsheet.Range("B" & startrow & ":r" & endrow).Copy
Sheets("Temp").Range("A" & starttemp).PasteSpecial xlPasteValues
starttemp = starttemp + 9

Next1:
Next projectsheet
'clear formatting in temp sheet
For Each cel In Worksheets("Temp").Range("a1:r500")
cel.Interior.ColorIndex = xlNone
Next cel
'Remove empty rows
'For Each cel In Worksheets("Temp").Range("A1:a500")


'Set temprange = Worksheets("Temp").Range("a1:r40")
'rows = temprange.rows.Count
'For i = rows To 1 Step -1
'MsgBox i
'If WorksheetFunction.CountA(temprange.rows(i)) = 0 Then temprange.rows(i).Delete

'Next i

End Sub

Regards

Terry