I am trying to sort three seperate arrays using the following code:

'Overhead broken down by site
'Denver
OVHsite.Range("E4").Copy
DataWks.Range("J28").PasteSpecial Paste:=xlValues
'Coastal
OVHsite.Range("O4").Copy
DataWks.Range("K28").PasteSpecial Paste:=xlValues
'Orem
OVHsite.Range("J4").Copy
DataWks.Range("L28").PasteSpecial Paste:=xlValues
'Overhead broken down by exception
'Denver
OVHsite.Range("D7:D13").Copy
DataWks.Range("N4").PasteSpecial Paste:=xlValues
'Coastal
OVHsite.Range("N7:N13").Copy
DataWks.Range("P4").PasteSpecial Paste:=xlValues
'Orem
OVHsite.Range("I7:I13").Copy
DataWks.Range("R4").PasteSpecial Paste:=xlValues
'Sort Ovh
DataWks.Range("N4:O10").sort Key1:=Range("N4"), Order1:=xlAscending,
Header:=xlGuess, _
OrderCustom:=1, MatchCase:=False, Orientation:=xlTopToBottom
DataWks.Range("P4:Q10").sort Key1:=Range("P4"), Order1:=xlAscending,
Header:=xlGuess, _
OrderCustom:=1, MatchCase:=False, Orientation:=xlTopToBottom
DataWks.Range("R4:S10").sort Key1:=Range("R4"), Order1:=xlAscending,
Header:=xlGuess, _
OrderCustom:=1, MatchCase:=False, Orientation:=xlTopToBottom

I am receiving the following error:

Run-time error '1004':
The sort reference is not valid. Make sure that it's within the data you
want to sort, and the first Sort By box isn't the same or blank.

What am I doing wrong? Any help would be appriciated....Thanks!