When trying to insert an ActiveX object (e.g. Microsoft Web browser or Calendar control) into an ActiveX container, I am receiving "Error inserting ActiveX object: unspecified error".
I’ve had one other instance of this same error occurring, and the fix was actually to reinstall the LabVIEW Run-Time Engine (RTE). You can download it from ni.com >> Drivers and Updates: http://digital.ni.com/softlib.nsf/MainPage?ReadForm&node=132010_US (select LabVIEW RTE from the Software drop-down)