Strange behaviour of Active-X Control

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Strange behaviour of Active-X Control

FU Berlin-2
I have installed a runtime version of an Active-X Control
msflxgrd.ocx) on the users machine. The control works only by sending
to methods of the class IDispatch, e.g. #setProperty:item:value but
not on methods created by the Active-X composer wizard. I let the
programm create the view manually, then I send a #queryInterface:
message to the control and I receive a FACILITY_DISPATCH error after
sending any message. This has worked fine on Dolphin 4 and on Dolphin
5 up to a certain moment which I cannot fix exactly.
I remember two things:
1. At some time I started to create 'to go' executables
2. Once I installed this Active-X control as a subclass of
ActiveXControlSite in order to add the view with the View composer. I
removed this class later because it did not work well.

In addition, I cannot add the control to Microsoft's
Active-X-Test-Browser programm 'tstcon32.exe' although it has been
registered.

I found two unreferenced entries of the control in the registry (no
TypeLib entry), but I do not want to remove these loose entries
because I fear that Dolphin Smalltalk will not start.

Is this a Windows or a Dolphin problem ? Or mine ?

Any suggestions ?

Jon