In a particular workbook, when I use this code to remove linebreaks, I get an overflow error. More specifically, it's hung up on the If 0 < InStr(MyRange, Chr(10)) Then bit. There isn't much data on the worksheet at all. I've definitely successfully ran the code on much larger sets of data. What could be causing this?
Sub RemoveCarriageReturns()
    Dim MyRange As Range
    Application.ScreenUpdating = False
    Application.Calculation = xlCalculationManual
    For Each MyRange In ActiveSheet.UsedRange
        If 0 < InStr(MyRange, Chr(10)) Then
            MyRange = Replace(MyRange, Chr(10), "")
        End If
    Next
    Application.ScreenUpdating = True
    Application.Calculation = xlCalculationAutomatic
End Sub
Edit: The error I'm getting is this: Run-time error '6': Overflow
 
    