There's a bug in VFP that causes that. See mskb#Q192693 for explanation and workaround.

>We are interacting with Outlook Express via the msmapi32.ocx to get email messages with certain attached files.
>The problem is when the code runs to perform this operation I getting back the error message: OLE Error code 0x800040154: Class no registered.
>If I try to run o=createobject("msmapi.mapisession.1") from the VFP command I get an error back: Class is not licensed for use.
>
>I've unregistered the msmapi32.ocx and re-registered it using regsvr32 and still have the probem.
>
>I've used Oleview to verify that the reference to the Message and Session references are in the registry.
>
>It is happening on both a Windows98 and Windows2000 machine.
>Any help on where to look would be much appreciated.
>
>Chad Newman