How do I know if I should load ActiveX when starting up the QTP 11 Add-in Manager?
Do I ask the developers of the application under test?
Does it hurt anything to include it when it is not required?
you should try to load no more then 3 add-ins in general. ActiveX dosnt break anything i.e. it go well with Web or Java or Windows (i tried with these three).
Loading more add-ins will impact the performance. It will not hurt anything.
More add-ins means a performance impact as well as chances of few clashes at times. ActiveX add-in is reason for few apps crashes at times and should be avoided until unless really required. And yes you would need some development info to understand if ActiveX would be needed or not