This is how I would write this, does it work any better for you?
Option Explicit
Sub ABC()
Dim sPath As String, sName As String
Dim bk As Workbook, sh As Worksheet
Set sh = ActiveSheet ' this is the summary sheet
sPath = "H:\Macros\OR Reports\Macro OR Reports\"
sName = Dir(sPath & "*.csv")
Do While Len(sName) > 0
Set bk = Workbooks.Open(sPath & sName)
Range("A1").UsedRange.Copy
sh.Range("A" & Rows.Count).End(xlUp).Offset(1).PasteSpecial xlPasteValues
sh.Range("A" & Rows.Count).End(xlUp).Offset(1).PasteSpecial xlPasteFormats
bk.Close False
sName = Dir()
Loop
End Sub
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