>>>If I add a method to a DLL to open a table and
>>>return a value, the table is closed automatically
>>>when I come back out of the DLL, even though the
>>>DLL was instantiated in the same datasession.
>>>
>>>If I open the table before I go into the DLL and
>>>pass in the alias, I get an 'alias not found' OLE
>>>error from the dll.
>>>
>>
>>
>>It sounds like your in-process server is based on a form class with a private datasession. If this is the case, then the form is instantiating it's own DE with its own datasession just like any other form with a private datasession...
>>
>
>Ed- even a custom class specified as OLE public will not make open tables available to the calling program. And a custom class has no private datasession.

I know you can create an OLEPUBLIC class based on a form with a private datasession; passing in an alias from another datasession creates the error as noted.