I'm not sure if the key sequence was intended to be a solution to the problem, but I believe it was rather fielded as a possible explanation of how you might end up with the problem (key sequence is select all, copy, then paste). If you start with a form that uses the old class, copy some objects from it, then paste into a new form, then rebuild the project, you could end up with a reference to the class library with the older outdated class.

>does not work on any vcx. :(
>
>>Ctrl +A Ctrl+C Ctrl+V
>>
>>>Thanks Lutz,
>>>
>>>I don't know how a second class got in there. Deleted the obsolete one.