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Starting PTV Visum 18/PTV Vissim 11 (or later releases) fails with an error message:
'Error when checking out the corresponding old license (server: .., license number: 900xxxxxx). The license number 900xxxxxx [has] not [been] found on any Codemeter stick. Error code: 200'
'If you have more than one Codemeter stick please check if the correct stick is plugged in. For a network dongle, please check the server search list in Codemeter WebAdmin, too.'

Workaround: Update to the current service pack: