I posted this earlier and received a couple of solutions, but they did
not work - any ideas - below is a recap:

I have two workbooks/files - both workbooks have the same macro below
that
hides every other column starting with Column B.

Sub hidecol()


Application.Calculation = xlCalculationManual
Application.ScreenUpdating = False
For i = 2 To 255 Step 2
If Columns(i).Hidden = False Then
Columns(i).Hidden = True
Else
Columns(i).Hidden = False
End If
Next i
Application.ScreenUpdating = True
Application.Calculation = xlCalculationAutomatic
End Sub


In workbook/file 1 it works just fine but in Workbook 2, it stops at
the
following line: Columns(i).Hidden = True

The error msg = "unable to set the Hidden Property of the range
class".


The only difference (that I can detect) between the 2 workbooks is in
Workbook 2 there are more columns that contain data than in workbook
1.


Past suggestions were as follows:

# 1 "Comments and other objects on the screen can stop columns hiding.
If
you have such, right click them, go to format and in properties
choose
"move and size with cells". " I had already checked this setting.

# 2

Sub hidecol()
Dim ws As Worksheet
Dim i As Long
Set ws = Worksheets("Sheet1")
Application.Calculation = xlCalculationManual
Application.ScreenUpdating = False
ws.Columns("A:IV").Hidden = False
For i = 2 To 255 Step 2
ws.Columns(i).Hidden = True
Next i
Application.ScreenUpdating = True
Application.Calculation = xlCalculationAutomatic
End Sub


I tried this code but get the same error msg as above (my code).

Any other ideas - much thx,