ActiveX problems in BCB4?

What kind of problems are people having with ActiveX in BCB4?  I noticed
that things that worked in BCB3 do not work in BCB4.  I posted an earlier
message that if I derive a component from an imported ActiveX control, the
derived component generates errors in design and runtime- even though the
imported ActiveX control works fine.  This has happened on every ActiveX
control I imported.  Just wanted to know what other problems I can expect.
In my opinion, I can't move to BCB4 until these are resolved.

-John