Find Part Text On All Sheets & Delete The Column

I am trying to move through the worksheets and delete all columns with "Accession" in contained in them. I have to do this with an external macro as the spreadsheet with the data is created from another program. I tried this and get an 'Object or With block variable not set' error and the debug highlights the Cells. Find line of the code.

Also, the number of columns could be variable within the spreadsheet as it is compiled by the other program.


Sub DelAccessionNum()
Dim Wrkst As Worksheet
For Each Wrkst In ActiveWorkbook.Worksheets
Cells.Find(What:="Accession", After:=ActiveCell, LookIn:=xlFormulas, LookAt:= _
xlPart, SearchOrder:=xlByRows, SearchDirection:=xlPrevious, MatchCase:=False _
, SearchFormat:=False).Activate
On Error Goto Completed:
Selection.EntireColumn.Delete Shift:=xlToLeft
Completed:
Next
End Sub