IDL Problem Code 36 with alias reserved-pro-method 
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Warning
Potentially fatal error depending on if the internal routine is written in PRO code or in core IDL/ENVI
If you have a procedure method definition that conflicts with a core IDL definition, this gets reported.
idl
pro IDLffVideoRead::Cleanup
  ; ^^^^^^^^^^^^^^^^^^^^^^^ problem
endTo correct, rename your method as something else.
idl
pro IDLffVideoRead::Cleanup2
  ; ^^^^^^^^^^^^^^^^^^^^^^^ problem
  self.cleanup
end