line 345 is 'ASSERT(m_pCtrlSite != NULL)'. So!, it seems to be to me that Activex wasn't installed or registered. I did it then!, but when i did it using the installer CD from visual studio 6.0 in custom way only for activex, perfect!, my error disappeared. But when i did it using just regsvr32 command it doesn't work, errors continues!, So my question is... There is some way for registering activex avoiding use CD from visual studio?