>>>OLE error code 0x80040154: Class not
>>>registered. OLE object is being ignored.
>>>Record number 8.
>>>
>>>You can then click OK or Cancel. Clicking OK calls up the debugger and a new dialog whch says "Unknown member OTREE" and then you must Cancel and VFP seems to be doing something in the background and you need to close VFP.
>>>
>>>I have tried to delete the existing *_ref.* files for the project. This allows the search dialog to appear. I can then click the Search button and then again I get a dialog which says "OLE error code 80040154: Class not registered".
>>
>>MS Treeview not installed / partially deinstalled / registry barfed ?
>>Run a form with TV / LV Combo
>
>Hi Thomas, thanks. how to re-register it then? Which file is it?

Jos,

AFAIR MsComCtl.Ocx -
But make sure you are not running into UAC issues or 32/64 bit folder issues...
So run as Admin and under 64Bit the versions for SysWOW64
[I want to know who is responsible for such great mnemonic helping hints at MS]

HTH

thomas